sternocleidomastoideus

English

Etymology

Borrowed from New Latin sternocleidomastoīdeus, clipping of mūsculus sternocleidomastoīdeus (“sternocleidomastoid muscle”).

Pronunciation

• (General American) IPA^(key): /ˌstɝ.nəˌklaɪ.dəˌmæˈstɔɪ.di.əs/
• Rhymes: -ɔɪdiəs

Noun

sternocleidomastoideus (plural sternocleidomastoidei)

1. (anatomy) Alternative form of sternocleidomastoid muscle.

References

• “sternocleidomastoideus”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

Latin

Etymology

From sternum (“the breastbone”) +‎ Ancient Greek κλείς (kleís, “the collarbone”) +‎ mastoīdēs (“like a breast”) +‎ -eus (adjectival suffix). Doublet of sternocleidomastoīdēs.

Pronunciation

• (Classical Latin) IPA^(key): /ster.no.klei̯.do.mas.toˈiː.de.us/, [s̠t̪ɛrnɔkɫ̪ɛi̯d̪ɔmäs̠t̪oˈiːd̪eʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ster.no.klej.do.mas.toˈi.de.us/, [st̪ernoklejd̪omäst̪oˈiːd̪eus]

Adjective

sternocleidomastoideus (feminine sternocleidomastoidea, neuter sternocleidomastoideum); first/second-declension adjective (New Latin)

1. (anatomy) sternocleidomastoid

   mūsculus sternocleidomastoīdeus ― sternocleidomastoid muscle

Inflection

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	sternocleidomastoīdeus	sternocleidomastoīdea	sternocleidomastoīdeum		sternocleidomastoīdeī	sternocleidomastoīdeae	sternocleidomastoīdea
Genitive	sternocleidomastoīdeī	sternocleidomastoīdeae	sternocleidomastoīdeī		sternocleidomastoīdeōrum	sternocleidomastoīdeārum	sternocleidomastoīdeōrum
Dative	sternocleidomastoīdeō		sternocleidomastoīdeō		sternocleidomastoīdeīs
Accusative	sternocleidomastoīdeum	sternocleidomastoīdeam	sternocleidomastoīdeum		sternocleidomastoīdeōs	sternocleidomastoīdeās	sternocleidomastoīdea
Ablative	sternocleidomastoīdeō	sternocleidomastoīdeā	sternocleidomastoīdeō		sternocleidomastoīdeīs
Vocative	sternocleidomastoīdee	sternocleidomastoīdea	sternocleidomastoīdeum		sternocleidomastoīdeī	sternocleidomastoīdeae	sternocleidomastoīdea

Descendants

• → English: sternocleidomastoideus