substernomastoid

sub·ster·no·mas·toid

(sŭb'ster-nō-mas'toyd),
Beneath the sternomastoid muscle; denoting a group of deep cervical lymph nodes.
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substernomastoid

(sŭb-stĕr-nō-măs′toyd) [″ + ″ + Gr. mastos, breast, + eidos, form, shape]
Beneath the sternomastoid muscle.
Medical Dictionary, © 2009 Farlex and Partners