| A | B |
|---|
| A or an | Not or non, without/ for example: Abiotic, amoral, atypical, anerobic |
| Ad- | To/ for example: addict, adrenal |
| Ambi- | Both/ for example: ambidexterous |
| Anthrop | HumanNeeding oxygen or air/ for example: Anthropology, philanthropy, Anthropomorphic |
| Aero- | Needing oxygen or air/ for example: aerobic |
| Amphi | Both, doubly/ for example: Amphibian |
| Ante- | Before/ for example: Antecedent, anterior |
| Anti- | against/ for example: antibiotic, antigen |
| Aqua- | water, / for example: aquatic |
| Arthro- | Joint/ for example: arthritis |
| Aster/astra | star/ for example: astronomy |
| Audi | Hear/ for example: Audible |
| Auto | self/ for example: Automatic, autonomous, autoclave |
| Bi | Two, twice, double/ for example: Bilateral |
| Bio | Life, living/ for example: Biology, biography |
| Centi- | Hundred / for example: Centimeter |
| Cephal | Head / for example: cephalopod |
