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Term. Combining Form
| Combining Form | Definition |
|---|---|
| Acanth(o) | Spiny; Thorny |
| Actin(o) | Light |
| Aer(o) | Light |
| Alge, Algesi, Algio, Algo | Pain |
| Amyl(o) | Starch |
| Andro | Masculine |
| Arthero | Plaque; Fatty substance |
| Bacill(i) | Bacilli; Bacteria |
| Bacteri(o) | Bacteria |
| Bar(o) | Weight; Pressure |
| Bas(o), Basi(o) | Base |
| Bio- | Life |
| Blasto | Immature cells |
| Cac(o) | Bad; Ill |
| Calc(o), Calic(o) | Calcium |
| Carcin(o) | Cancer |
| Chem(o) | Chemical |
| Chlor(o) | Chlorine; Green |
| Chondrio, Chondro | Cartilage, Grainy, Gritty |
| Chore(o) | Dance |
| Chrom, Chromat, Chromo | Color |
| Chrono | Time |
| Chyl(o) | Chyle, a digestive juice |
| Chym(o) | Chyme, Semifluid production of chyme in the stomach |
| Cine(o) | Movement |
| Coni(o) | Dust |
| Crin(o) | Secrete |
| Cry(o) | Cold |
| Crypt(o) | Hidden; Obscure |
| Cyan(o) | Blue |
| Cycl(o) | Circle; Cycle; Ciliary body |
| Cyst(o), Cysti | Bladder, Cyst, Cystic duct |
| Cyt(o) | Cell |
| Dextr(o) | Right, Towards the right |
| Dips(o) | Thirst |
| Dors(o), Dorsi | Back |
| Dynamo | Energy; Force |
| Echo | Reflected sound |
| Electr(o) | Electricity; Electric |
| Ensin(o) | Red; Rosy |
| Ergo | Work |
| Erythr(o) | Red, Redness |
| Esthesio | Sensation, Perseption |
| Ethmo | Ethmoid bone |
| Etio | Cause |
| Fibr(o) | Fiber |
| Fluor(o) | Light; Luminous; Fluorine |
| Fungi | Fungus |
| Galact(o) | Milk |
| Gen(o) | Producing; Being born |
| Gero, Geront(o) | Old age |
| Gluco | Glucose |
| Glyco | Sugars |
| Gonio | Angle |
| Granulo | Granular |
| Gyn(o), Gyne, Gyneco | Woman |
| Home(o), Homo | Same; Constant |
| Hydr(o) | Hydrogen, Water |
| Hypn(o) | Sleep |
| Iatr(o) | Physician; Treatment |
| Ichthy(o) | Dry; Scaly; Fish |
| Idio | Unknown; Distinct |
| Immun(o) | Safe; Immune |
| Kal(i) | Potassium |
| Karyo | Nucleus |
| Ket(o), Keton(o) | Ketone; Acetone |
| Kin(o), Kine | Movement |
| Kinesi(o), Kineso | Motion |
| Kyph(o) | Humpback |
| Lact(o), Lacti | Milk |
| Latero | Lateral, to one side |
| Lepto | Light, Frail, Thin |
| Leuk(o) | White |
| Lip(o) | Fat |
| Lith(o) | Stone |
| Log(o) | Speech, Words, Thoughts |
| Lys(o) | Dissolution |
| Macr(o) | Large; Long |
| Medi(o) | Middle; Medial plane |
| Meg(a), Megal(o) | Large; Million |
| Melan(o) | Black; Dark |
| Mes(o) | Middle; Median |
| Micr(o) | Small; One-millionth; Tiny |
| Mio | Smaller; Less |
| Morph(o) | Structure; Shape |
| Narco | Sleep; Numbness |
| Necr(o) | Death; Dying |
| Noct(i) | Night |
| Normo | Normal |
| Nucle(o) | Nucleus |
| Nyct(o) | Night |
| Oncho, Onco, | Tumor |
| Orth(o) | Straight; Normal |
| Oxy | Sharp; Acute; Oxygen |
| Pachy | Thick |
| Path(o) | Disease |
| Phago | Eating; Devouring; Swallowing |
| Pharmaco | Drugs; Medicine |
| Phon(o) | Sound; Voice; Speech |
| Phot(o) | Light |
| Physi, Physico | Physical; Natural |
| Physo | Air; Gas; Growing |
| Phyt(o) | Plant |
| Plasma, Plasmo | Formative; Plasma |
| Poikilo | Varied; Irregular |
| Pseud(o) | False |
| Pyo | Pus |
| Pyreto | Fever |
| Pyro | Fever; Fire; Heat |
| Radio | Radiation; X-ray; Radius |
| Salping(o) | Tube |
| Schisto | Split |
| Schiz(o) | Split; Division |
| Scler(o) | Hardness; Hardening |
| Scolio | Crooked; Bent |
| Scoto | Darkness |
| Sidero | Iron |
| Sito | Food; Grain |
| Somat(o) | Body |
| Somn(o), Somni | Sleep |
| Sono | Sound |
| Spasmo | Spasm |
| Spher(o) | Round; Spherical |
| Spir(o) | Breath; Breathe |
| Squamo | Scale; Squamous |
| Staphyl(o) | Grapelike clusters |
| Steno | Narrowness |
| Stere(o) | Three-dimensional |
| Strepto | Twisted chains; Streptococci |
| Styl(o) | Peg-shaped |
| Syring(o) | Tube |
| Tel(o), Tele(o) | Distant; End; Complete |
| Terato | Monster (as a falformed fetus) |
| Therm(o) | Heat |
| Tono | Tension; Preasure |
| Top(o) | Place; Topical |
| Tox(i), Toxico, Toxo | Poison; Toxin |
| Tropho | Food; Nutrition |
| Vivi | Life |
| Xanth(o) | Yellow |
| Xeno | Stranger |
| Xer(o) | Dry |
| Xiph(o) | Sword; Xiphoid |
| Zo(o) | Life |
| Zym(o) | Fermentation; Enzyme |