> as lemmas
subgingival
subgingival adj. 
/ˌsʌbˈdʒɪn(d)ʒᵻvl/, /ˌsəbˈdʒɪndʒəv(ə)l/ [after French sous-gingival (1864 or earlier)]
Brit. /ˌsʌbdʒɪnˈdʒʌɪvl/
, /ˌsʌbdʒɪnˈdʒʌɪvl//ˌsʌbˈdʒɪn(d)ʒᵻvl/U.S. /ˌsəbˌdʒɪnˈdʒaɪv(ə)l/
, /ˌsəbˌdʒɪnˈdʒaɪv(ə)l//ˌsəbˈdʒɪndʒəv(ə)l/ΘΚΠ
the world > life > the body > digestive or excretive organs > digestive organs > mouth > [adjective] > gum
gingival1669
subgingival1867
1867 N.Y. Med. Jrnl. 4 402 This tissue is vascular, and has been designated sub-gingival mucous tissue.
1962 G. C. Blake & J. R. Trott Periodontol. x. 97 Fine sickle scalers are used for subgingival scaling.
1979 R. A. D. Williams & J. C. Elliott Basic & Appl. Dental Biochem. xii. 224 Dental plaque covers the tooth (supragingival plaque) and extends over the tooth surface of the gingival pocket (subgingival plaque).
2001 FEMS Microbiol. Lett. 196 129 M[ethanobrevibacter] oralis was found to be the predominant archaeon in the subgingival dental plaque.
<
as lemmas