In an ideal way; perfectly. / Given ideal circumstances; preferably.

(informal) A very creative person; someone who is always able to come up with fresh ideas.

(philosophy) One who adheres to idealism. / Someone whose conduct stems from idealism rather than from practicality. / An unrealistic or impractical visionary.

(law, of a name) wrongly spelled, but sufficiently correct to identify someone.

An ideogram.

(metaphysics) An idea separated from a complex object, or from other ideas which naturally accompany it; as the solidity of marble when contemplated apart from its color or figure.

(physics) the equation of state of an ideal gas

(physics) a hypothetical gas, whose molecules exhibit no interaction, and undergo elastic collision with each other and with the walls of the container

(informal) To not know; to have no idea.

in agreement