An, A-; not, without (anemia)absentAmphi-; around about (amphibian)amphibianAna-, ano-; up, back, again (aneurysm)analysisAnti- (anth-); against, resistingantagonistApo-; from, separation (apostasies: STA- “to stand”)apostleArche-, archi-; first, chief (archiplasm)architypeCata- (cath-) or kata-; down, lower, under (catabolic)catastropheDi-; twice, twofold (dimorphic)diameter (two radii)Dia-; through, across, apart (diameter, diagnosis)diameterDicha-; in two, double (dichotomy)dichotomyDys-; bad, difficult, hard, disordered (dysfunction)dysfunctionEk-, ex-; out form, outside (exophthalamus)eccentricEkto-; without, on the outside (ectomere, ectopia)(see: ek-, ex-)En- (em-); in, within, among (endemic)energyEndo-; within (endothelium)endocrineEnto-; within (entotic: OT- “ear”)entropic (see: endo-)Epi-; upon, on (epidermis)epidemicEso-; inward, within (esotropic, esotoxin)esotericEu-; we, good, normal (eugenics)euphonyExo-; outside, outward, outer (exocolitis)exoticHemi-; half, partly (hemialgia: ALGOS – “pain”)hemisphereHyper-; above, over, excessive (hyperemic, hypertrophy)hyperactiveHypo-; low, under, below (hyponatremia)hypocriteMeta-, (meth-); after, among, beyond, behind (metacarpal: KARPOS – “wrist”)metaphysical, metaphor, methodOpistho-; behind (opisthognathism)Pali(n)-; back, again, once more (palikinesia: KINE – “movement”)palindromePara-; by the side of, near (paranoia: NOOS, “mind”)paranoiaPeri-; around (periosteum)Periodontal Pro-; before, in front of, forward (prophase)professionalPros-; to, in addition, near (prosencephalon: ENCEPHALON, brain)prostheticProso-, prostho-; forward, before, in front of (prosoplasia)prostheticSyn- (sym- before “b” or “p”); with, together (syndrome, symbiosis: BIOS, “life”)synonym, sympathy