(obsolete) Consisting of eight; eight in number.

(organic chemistry) Any of the eighteen isomeric aliphatic hydrocarbons (C₈H₁₈) found in petroleum, especially an iso-octane 2,2,4 trimethyl-pentane; they are used as fuels and solvents.

An American feline carnivore (Leopardus pardalis, syn. Felis pardalis) covered with blackish ocellated spots and blotches which are variously arranged.

Occurring or appearing irregularly from time to time, but not often. / Created for a specific occasion. / Intended for use as the occasion requires. / Acting in the indicated role from time to time.

A person who does something only occasionally.

Any time in the middle of October.

Happening in the middle of October.

In the middle of October.

An actual instance when a situation occurs; an event or happening. / (grammar, semantics) The lexical aspect (aktionsart) of verbs or predicates that change in or over time.

Synonym of eightysomething: a person between 80 and 89 years old.