simple past tense and past participle of initial

plural of initiator

One who initiates. / (chemistry) A substance that initiates a chain reaction or polymerization.

To assign initial values to something / (computing) To assign an initial value to a variable / (computing) To format a storage medium prior to use

present participle of initiate

(Rastafari) unity

(nonstandard) On one's own initiative; without being prompted

The quality of being initial, or coming first.

Relating to or involving initiation (into a religious group, spiritual status, etc).

(category theory) An object within a category which sends out arrows to all other objects in that category, and such that each of these arrows is unique.