extraembryonal
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extraembryonal — adj. occurring outside of an embryo … English contemporary dictionary
extraembryonal — ex·tra·embryonal … English syllables
malignant teratoma — 1. a solid, malignant ovarian tumor resembling a dermoid cyst but composed of immature embryonal or extraembryonal elements derived from all three germ layers. Called also immature t. and solid t. 2. teratocarcinoma … Medical dictionary
