| Word | Definitions | Synonyms |
|---|---|---|
| acyclic | (adjective) not cyclic; especially having parts arranged in spirals rather than whorls | - |
| (adjective) having an open chain structure | Synonyms: open-chain | |
| acyclovir | (noun) an oral antiviral drug (trade name Zovirax) used to treat genital herpes; does not cure the disease but relieves the symptoms | Synonyms: Zovirax |