a- : away, from, out. in, on. Anglo-Saxon intensifying prefix. out, wholly. absence, lack.ab- : away from. electromagnetic unit in the centimeter-gram-second system.abs- ac- : to, toward, near.acet- , aceto- : methyl group bonded to a carboxyl group.acr- , acro- : sharp. tip. extremity. peak.actin- , actino- ad- : near, at. toward, to, tendency, addition.aden- , adeno- ae- aer- , aero- : air, aircraft.af- Afro- : African.ag- agr- , agri- , agro- : agriculture.al- : near, at. toward, to, tendency, addition.allo- : different. ( chemistry ) ambi- : both, on both sides.amphi- an- : not.ana- : up. on. again. apiece.and- andr- , andro- : human. man, male.anemo- angio- : blood vessels, lymph vessels.Anglo- : England, English. Anglo-Saxon.ano- antho- anthrop- , anthropo- : man, human.ante- : prior to in time. in front of in space.ant- , anth- , anti- : against, hostile to. ppposite of, reverse. counteracting, neutralizing.ap- , apo- : away from, separate. without, lacking. ( chemistry ) aqua- , aque- , aqui- : water.arc- : ( mathematics ) arch- , archi- : chief, highest, most important. earlier, primitive.archaeo- , archeo- : ancient, early, primitive.aristo- :, elite arithmo- arterio- : ( medicine ) arthr- , arthro- : ( biology ) astr- , astro- : star. celestial body.atto- audio- aut- , auto- : regarding oneself. automatic. car, driving.azo- : ( chemistry )
B- : academic grade awarded by some institutions. Slightly better than a C+, slightly worse than a B.bacter- , bacteri- , bacterio- : bacteria, bacterial things, bacteriology.bar- , baro- : pressure.bathy- : deep, especially deep sea.be- : as an intensifier. on, around, over, in contact with. verbs derived from nouns or adjectives.benz- , benzo- : ( chemistry ) bi- , bin- : two. ( chemistry ) biblio- : book.bio- : life.blast- , blasto- : bud, budding, germination.brachy- brady- brom- , bromo- : ( chemistry ) bronch- , bronchi- , broncho- : ( medicine ) bry- , bryo- by- , bye-
C- : academic grade given by certain institutions. Slightly better than a D+ and slightly worse than a C.caco- : bad.carb- , carbo- : ( chemistry ) cardi- , cardio- : heart.cel- , celo- cen- , ceno- cent- , centi- : hundred, one-hundredth. 10-2 .centr- , centri- cephal- , cephalo- : ( biology ) chalco- : copper, brass. ore.cheiro- chem- , chemi- : chemicals, chemistry.chemico- chemo- : chemicals, chemistry.Chino- chiro- chlor- , chloro- : green. ( chemistry ) choan- , choano- chol- , chole- Christo- : Christ. Christian.chron- , chrono- : time.chrys- , chryso- cine- circum- : around.cis- : on this side of. ( chemistry ) co- : together, mutually, jointly. partner or subordinate in an activity. to the same degree.coel- , coelo- coen- , coeno- col- : with, together, joint. used with certain words to intensify their meaning.com- : with, together, joint. used with certain words to intensify their meaning.copr- , copro- : excrement, dung.con- : with, together, joint. used with certain words to intensify their meaning.contra- : against.cor- : with, together, joint. used with certain words to intensify their meaning.cosmo- : universe, world.counter- : in opposition to.cryo- : cold, freezing.crypto- : hidden, secret.cyan- , cyano- : dark blue-green in color. ( chemistry ) cyber- : computer. cyberspace.cycl- , cyclo- : circle. cycle. ( chemistry ) cyn- , cyno- cyt- , cyto- : ( biology )
de- : reversal, undoing, removing. intensifying. from, off.dec- , deca- : ten. 10.deci- : tenth part. 10-1 .deka- : ten. 10.demi- : half. one that partly belongs to.deoxy- : ( chemistry ) deuter- , deutero- : second (in the sense of next after the first).di- : two, twice or double. through, across. reversal, removal. apart. intensifying.dia- , di- : through, across.dichlor- , dichloro- : ( chemistry ) dinitro- : ( chemistry ) 2 ).dino- dipl- , diplo- : double.dis- , di- : reversal, removal. apart. intensifying.dodec- , dodeca- : twelve.dys- : abnormal. difficult. impaired. bad.
eco- : habitat or environment. ecological, environmental (in the ecological sense).ecto- : outside, external.eigen- : own (adjective).electr- , electro- : electricity, electric. electrolytic. electron.em- : in, into, on, onto, within. covered. caused. provide with. as intensifier.en- : in, into, on, onto, within. covered. caused. provide with. as intensifier.end- , endo- : inside, within. taking in.ennea- : nine.ent- , ento- : inside, within, inner.epi- : above, over, on, upon, outer. in addition to, besides, attached to. after. chemical entity related to or distinguished from (such) another.equi- : equal, equally.ethno- : race, people, cultural group.eu- : good. well, easily. true.Eur- , Euro- : Europe, especially as a political entity.ex- : out of, outside. not. former.exa- : quintillion. 1018 .exbi- : 260 .exo- : outside, external, outer. turning out.extra- : outside, beyond.
femto- : 10-15 .ferro- : iron (element). ( chemistry ) fluor- , fluori- , fluoro- : fluorine. fluorescence.for- : from. against, so as to involve prohibition, exclusion, omission, failure, neglect, or refusal. destructively, detrimentally. completely, excessively, to exhaustion, to pieces.fore- : before, in front of, front, foremast. earlier, beforehand.Franco- : French.
gastr- , gastro- : stomach, gastric. cooking.genito- : genital.geo- : earth, ground, soil. geography.gibi- : 230 .giga- : billion, 109 . ( computing ) 30 .gen- , geno- : genetics, genus. family, tribe, race, offspring.gymno- : naked.gyn- , gyno- : women. female reproductive system. female reproductive organ.gyro-
haem- , haemat- , haemo- : blood.hagi- , hagio- half- hect- , hecto- : hundred. 100.heli- , helio- : sun.hem- , hemat- : blood.hemi- : half.hemo- : blood.hendeca- : eleven.hept- , hepta- : seven. seven atoms, seven groups.hetero- : other, different, other than usual. atoms of different kinds.hex- , hexa- : six. six atoms, six groups.hipp- , hippo- Hispano- hist- , histio- , histo- : ( biology ) hol- , holo- : whole, complete, total.homeo- homo- : man. same, similar, alike. homosexual.homoeo- hydro- : water, liquid. ( chemistry ) ( mineralogy ) ( zoology ) hyper- : over, above, beyond. excessive. existing in more than three spatial dimensions. linked non-sequentially, bridging points within an entity (as a database or network) nonsequentially.hypn- , hypno- : sleep. hypnosis.hypo- : below, beneath, under, down. deficient, less than normal. ( chemistry )
il- : not. in, within, into. toward, on, onto. lacking, without. covered. caused. provide with. as intensifier.im- : not. in, within, into. toward, on, onto. lacking, without. covered. caused. provide with. as intensifier.in- : not. in, within, into. toward, on, onto. lacking, without. covered. caused. provide with. as intensifier.
Indo- : India. East Indies. Indo-European.inter- : among, between, amid. reciprocal.intra- : inside, in, into, inward, interior, within. during, between.ir- : not. in, within, into. toward, on, onto. lacking, without. covered. caused. provide with. as intensifier.is- , iso- : equal, homogeneous, uniform. ( chemistry ) Italo- : Italian.
kibi- : 210 .kilo- : thousand. 1,000. ( computing ) 10 .
macr- , macro- : large. long. inclusive.mal- : bad, faulty. not. abnormal. inadequate.mebi- : 220 .mega- : million, 106 . ( computing ) 20 . ( computing - marketing ) 10 * 103 . great, large.mes- , meso- : middle. intermediate.meta- : transcending, encompassing, comprehensive. self-referential. analogies with metaphysics. classifications. change, transformation. ( pathology ) ( anatomy and zoology ) ( botany and zoology ) ( geology ) ( chemistry ) ( chemistry ) metro- : city.micr , micro- : very small. 10-6 . microscopy. microphotograph, microfilm.midi- milli- : 10-3 . thousand.mini- : small, brief.mis- : bad, wrong. lack, failure. opposite, not. unfavorable.miso- : hatred.mon- , mono- : one, single, alone.multi- : many.myria- : ten thousand. 10,000.myxo- : mucus.
nano- : 10-9 . nanotechnology. nanoscale.naso- : nose.necr- , necro- : death.neo- : new, recent.non- : not, other than. reverse. absent, lacking. unimportant, worthless, of little or no consequence.non- , nona- : nine.
oct- , octa- , octo- : eight.olig- , oligo- : few.omni- : all, universal.orth- , ortho- : straight. upright, vertical, perpendicular. right, proper, correct. ( chemistry ) ( chemistry ) ( physics ) 2 wherein the two nuclei have parallel spin.out- : external. surpassing, exceeding, greater, beyond.over- : above, higher. superior. excessive, surpassing, exceeding.ov- , ovi- , ovo- : egg. ovum.
palaeo- , pale- , paleo- : very old, prehistoric, ancient. very early, primitive, archaic.par- , para- : beside, near, alongside, beyond, aside. abnormal. incorrect, faulty. resembling, related, almost. subsidiary, accessory. ( chemistry ) pebi- : 250 .pent- , penta- : five.peta- : (United States of America) quadrillion, 1015 . (Great Britain) septillion, 1024 .phon- , phono- : sound, voice, speech.photo- : light, electromagnetic radiation, radiant energy. photograph.phys- , physi- , physio- : nature. physical.pico- : 10-12 . very small.post- : after. beyond.poly- : many. polymer.praeter- : beyond.pre- : front, anterior (in space). before, earlier, prior (in time).preter- : beyond.prot- , proto- : first, beginning, primary. ( linguistics ) pseud- , pseudo- : false, fake, spurious. pretentious. temporary, substitute.psych- , psycho- : mind. brain.pter- , ptero- : wing, feather.pyro- : fire, heat. fever. ( chemistry )
radi- , radio- : radiation. ( anatomy ) re- : again, anew. backward.robo- : robot.ribo- : set of 3 CHOH molecules
schiz- , schizo- : split, cleft. schizophrenia.semi- : half. partial, incomplete.sept- , septa- , septem- , septi- sex- , sexa- : six.Sino- : China.step- : related via marriage of parent.sub- : under, beneath, below. subsidiary, secondary, subordinate. almost, nearly, somewhat.sui- super- : above, over, upon. superior in size, quality, number, degree, status, title, or position. inclusive.supra- : above, over, on top. greater than, transcending.syl- : with, together.sym- : identical. with, together. concomitant.syn- : identical. with, together. concomitant.
