Providing guidance or direction.
Occurring in advance; preceding.
Ranking first.
Vertical space added between lines; line spacing.
An act by which one is led or guided.
Not known; unidentified; not well known.
A variable (usually x, y or z) whose value is to be found.
A person of no identity; a nonentity
Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.