sternocleidomastoides

Latin

Etymology

From sternum (“the breastbone”) +‎ Ancient Greek κλείς (kleís, “the collarbone”) +‎ mastoīdēs (“like a breast”). Doublet of sternocleidomastoīdeus.

Pronunciation

(modern Italianate Ecclesiastical) IPA^(key): [ster.no.kle.i.do.mas.toˈiː.des]

Adjective

sternocleidomastoīdēs (neuter sternocleidomastoīdes); third-declension one-termination adjective (Greek-type) (New Latin)

(anatomy) Of or pertaining to the breastbone, collarbone and the mastoid process of the temporal bone; sternocleidomastoid.

Inflection

Third-declension one-termination adjective (Greek-type).

	masc./fem.	neuter	masc./fem.	neuter
	singular		plural
nominative	sternocleidomastoīdēs	sternocleidomastoīdes	sternocleidomastoīdēs	sternocleidomastoīda sternocleidomastoīdia¹
genitive	sternocleidomastoīdis		sternocleidomastoīdum sternocleidomastoīdium¹
dative	sternocleidomastoīdī		sternocleidomastoīdibus
accusative	sternocleidomastoīdem	sternocleidomastoīdes	sternocleidomastoīdīs sternocleidomastoīdēs	sternocleidomastoīda sternocleidomastoīdia¹
ablative	sternocleidomastoīde sternocleidomastoīdī¹		sternocleidomastoīdibus
vocative	sternocleidomastoīdēs	sternocleidomastoīdes	sternocleidomastoīdēs	sternocleidomastoīda sternocleidomastoīdia¹

¹It is unknown whether adjectives of this type would use i-stem or consonant-stem endings in Classical Latin: the relevant forms are not attested. Depending on the word, either ending or both may be attested in New Latin.

Descendants

→ English: sternocleidomastoid