from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small glandular organ that is situated behind the top of the breastbone, consisting mainly of lymphatic tissue and serving as the site of T cell differentiation. The thymus increases gradually in size and activity until puberty, becoming vestigial thereafter.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A ductless gland, consisting mainly of lymphatic tissue, located behind the top of the breastbone. It is most active during puberty, after which it shrinks in size. It plays an important role in the development of the immune system and produces lymphocytes.
from the GNU version of the Collaborative International Dictionary of English
- adj. Of, pertaining to, or designating, the thymus gland.
from The Century Dictionary and Cyclopedia
- n. A genus of labiate plants, belonging to the tribe Satureineæ and subtribe Menthoideæ; the thyme.
- n. In anatomy, a fetal structure, vestigial in the adult, one of the so-called ductless glands, of no known function, situated inside the thorax, behind the breast-bone, near the root of the neck.
- n. In pathology, same as acrothymion.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. large genus of Old World mints: thyme
- n. a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age
New Latin, from Greek thumos, warty excrescence, thymus.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the Modern Latin thymus, from the Ancient Greek θύμος (thumos, "warty excrescence”, (also, as used by Galen) “thymus gland"). (Wiktionary)