/ Dictionary / Index S subgingival: Meaning and Definition of Find definitions for: sub•gin•gi•val Pronunciation: (sub"jin-jī'vul, sub-jin'ju-), [key] — adj. being or occurring under the gums; esp., being or occurring in the crevice between the gum margin and the neck or root of a tooth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subgenus subglacial Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language