| 释义 |
telogen|ˈtɛləʊdʒən|
[f. telo-1 + -gen.]
1. Biol. The stage in the life of a hair or hair follicle following cessation of growth of the hair.
1926F. W. Dry in Jrnl. Genetics XVI. 297 For the present purpose it is convenient to divide the developmental history into the following three phases: (1) The Anagen phase... (2) The Catagen phase... (3) The Telogen phase, the hair having become a dub-hair and not growing further. 1955Proc. Soc. Exper. Biol. & Med. LXXXVIII. 450/1 Telogen is the resting stage of a follicle and it is reached approximately 19 days after plucking. 1980Practitioner Nov. 1161/1 Hair growth..is..phasic, there being a phase of growth (anagen) lasting approximately three to five years in normal scalp hair and a resting phase (telogen) lasting for around three months.
2. Chem. A simple compound that provides chain-terminating radicals in polymerization and limits the degree of polymerization.
1948[see telomer]. 1974C. M. Starks Free Radical Polymerization i. 2 Chain transfer agents (telogens) are often added to polymerization recipes as molecular weight regulators. 1980[see taxogen]. |