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androstenedione |
a steroid hormone precursor to testosterone and estrogen that is secreted by the testes, ovaries, and adrenal cortex. |
bombard |
a primitive stone-throwing device, the precursor of the modern cannon. [1/4 definitions] |
dehydroepiandrosterone |
a steroid hormone produced by the adrenal glands, gonads, and brain that is a precursor of androgens and estrogens. |
forerun |
to be the precursor of; foreshadow. [1/2 definitions] |
forerunner |
one that came before; ancestor; predecessor; precursor. [1/2 definitions] |
oogonium |
a cell that is a precursor of an oocyte. [1/2 definitions] |
plasminogen |
the inactive precursor of plasmin, an enzyme in plasma that dissolves certain proteins involved in blood clotting. |
progenitor |
an originator of or model for something; precursor. [1/2 definitions] |
protoplanet |
a large body of matter that is a precursor to a planet. |
rhythm-and-blues |
a kind of popular American music, developed mostly by blacks, that combines blues and jazz, is characterized by a strong beat, and was a precursor of rock-'n'-roll. |
tryptophan |
an essential amino acid in animals that is a component of proteins and a precursor of serotonin and niacin. |
tyrosine |
an amino acid found in proteins that is a precursor of certain hormones and neurotransmitters. |
uracil |
a pyrimidine compound essential to life, important in metabolism and as a precursor of RNA. |
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