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.
| 1926 F. 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. 1955 Proc. Soc. Exper. Biol. & Med. LXXXVIII. 450/1 Telogen is the resting stage of a follicle and it is reached approximately 19 days after plucking. 1980 Practitioner 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]. 1974 C. M. Starks Free Radical Polymerization i. 2 Chain transfer agents (telogens) are often added to polymerization recipes as molecular weight regulators. 1980 [see taxogen]. |