fluid (adj.) Copy link Outline 1. fluĭdus2. fluxus (rare)3. lĭquĭdus • fluid (adj.): 1. fluĭdus: what is so contrary as earthy to f., quid tam contrarium quam terrenum fluido? Col.: f. bodies, fluido quae corpore constant, Lucr. 2. fluxus (rare): f. juices, f. succi, Plin. 9, 38, 62. 3. lĭquĭdus: v. liquid.