Thymus

{thi’-mics) [difiog, thymus]. The T. gland, an organ situated in the anterior superior mediastinum. It continues to develop until the second year of life, afterward remains stationary until about the fourteenth, and then undergoes fatty metamorphosis and atrophy. The T. consists of lobules largely composed of lymph adenoid ti ue in which minute concentric bodies, the corpuscles of Ha al, are found. The latter are remnants of epithelial structures. 2. A genus of labiate plants. See Thyme. 626