SUBMERGE, verb transitive submerj'. [Latin submergo; sub and mergo, to plunge.] 1. To put under water; to plunge. 2. To cover or overflow with water; to drown. So half my Egypt was submerg'd. SUBMERGE, verb intransitive submerj'. To plunge under water, as swallows.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI