Thymus gland
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 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.
- 2 a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age wordnet