an amendment to the u.s. const-tution, ratified in 1913, authorizing congress to levy a tax on incomes.
17-alpha-hydroxyprogesterone 17-al·pha-hy·drox·y·pro·ges·ter·one (-āl’fə-hī-drŏk’sē-prō-jěs’tə-rōn’) n. a compound produced by the adrenal glands and often used therapeutically as a progestogen when such a steroid is needed for parenteral administration.
- 17-hydroxycorticosteroid test
17-hydroxycorticosteroid test 17-hy·drox·y·cor·ti·co·ste·roid test (-hī-drŏk’sē-kôr’tĭ-kō-stēr’oid’, -stěr’-) n. a test employing a reaction of adrenocorticosteroid and phenylhydrazine, performed on urine and used to measure adrenocortical function, as in the diagnosis of addison’s disease and cushing’s syndrome.
17-ketosteroid 17-ke·to·ste·roid (-kē’tō-stēr’oid’, -stěr’-) n. a steroid having a ketone group attached to its 17th carbon atom, especially any of those produced by the adrenal cortex and gonads and occurring normally in the urine. also called 17-oxosteroid.
1776 definition the year in which the declaration of independence was written.
- 17th amendment
noun an amendment to the u.s. const-tution, ratified in 1913, providing for the election of two u.s. senators from each state by popular vote and for a term of six years.