| OPHIDIAN | Old scientific term for a snake (8) |
| ROPE | Nope ___: facetious term for a snake |
| TAUTONYM | What is the scientific term for Chloris chloris (the greenfinch), when the generic and the specific name are the same? (8) |
| ANTIDOTE | Treatment for a snake bite (8) |
| QUACKERY | Field for a snake-oil peddler |
| LITERARY | "Terms like grace, new birth, justification [...] which with St Paul are ____ terms, theologians have employed as if they were scientific terms" (Matthew Arnold) |
| ANODE | Scientific term for the negative end of a battery |
| LARVA | Scientific term for the young of insects that undergo complete metamorphosis |
| CILIA | Scientific term for eyelashes |
| SCINTILLATION | The scientific term for the twinkling of stars |
| OXIDATION | Scientific term for the process generally known as rust (9) |
| TINE | Word in Middle English for a snake's forked tongue, later used to mean a strong taste or flavour, a prong of a fork or the spike of knife that fixes into the haft or handle (4) |
| ELEPHANTTRUNK | What a blind man mistakes for a snake, in a fable |
| SELINATROPIA | What scientific term describes plant movement caused by moonlight? (12) |
| PATRICK | Under pressure, a ploy for a snake handler (7) |
| ANTIMATTER | Scientific term first used by Arthur Schuster in two letters to Nature in 1898 (10) |
| ARSENIC | As full, in scientific terms (7) |
| CIS | "This side of" in scientific terms |
| DRUPES | Stone fruits, in scientific terms (6) |
| SERPENT | Another name for a snake; this word is sometimes used to denote fictional snake-like sea monsters. |
