ACT - - Legislation enacted into law. A bill that has passed both houses of the legislature, been enrolled, ratified, signed by the governor or passed over the governor's office, and printed. It is a permanent measure, having the force of law until repealed.ONVENE -- When the members of a chamber gather for the meeting of the legislature daily, weekly and at the beginning of a session as provide by the constitution or law. DEBATE -- Discussion of a matter according to parliamentary rules.
Freebase(0.00 / 0 votes)Rate this definition: Levothyroxine. Levothyroxine, also L-thyroxine or T4, is a synthetic form of the thyroid hormone thyroxine, which is normally secreted by the follicular cells of the thyroid gland. It is also used to treat thyroid hormone deficiency, and occasionally to prevent the recurrence of thyroid cancer.
Thyroxine. (3,5,3â,5â,-tetraiodothyronine), the principal thyroid hormone in vertebrate animals and man, produced by the thyroid follicles. Thyroxine is synthesized by iodination of the amino acid tyrosine and the oxidative condensation of two diiodotyrosine molecules with the splitting off of alanine. hormone secreted by the thyroid gland. Thyroxine (structure 1) is quite similar chemically and in biological activity to triiodothyronine (2). Both are derivatives of the amino acid tyrosine and are unique in being the only iodine-containing compounds of importance in the economy of all higher forms of animal life.