Lu″cid (?), a. [L. lucidus, fr. lux, lucis, light. See Light, n.] 1. Shining; bright; resplendent; as, the lucid orbs of heaven.
Lucid, like a glowworm. Sir I. Newton.
A court compact of lucid marbles. Tennyson.
2. Clear; transparent. “ Lucid streams.” Milton.
3. Presenting a clear view; easily understood; clear.
A lucid and interesting abstract of the debate. Macaulay.
4. Bright with the radiance of intellect; not darkened or confused by delirium or madness; marked by the regular operations of reason; as, a lucid interval.
Syn. — Luminous; bright; clear; transparent; sane; reasonable. See Luminous.