a polyamine, H 2 N(CH 2) 3 NH(CH 2) 4 NH(CH 2) 3 NH 2 , formed from spermidine and occurring in all cells, especially prevalent in semen, sputum, pancreatic tissue, and certain yeasts.
a white or colourless basic water-soluble amine that is found in semen, sputum, and animal tissues; diaminopropyltetramethylenediamine. Formula: C10H26N4
[spur-mee-oh-jen-uh-sis] /ˌspɜr mi oʊˈdʒɛn ə sɪs/ noun, Cell Biology. 1. the development of a spermatozoon from a spermatid. spermiogenesis /ˌspɜːmɪəʊˈdʒɛnɪsɪs/ noun 1. the stage in spermatogenesis in which spermatozoa are formed from spermatids spermiogenesis sper·mi·o·gen·e·sis (spür’mē-ō-jěn’ĭ-sĭs) n. The stage of spermatogenesis during which spermatids are transformed into spermatozoa.
1. a combining form of sperm1 , used also with the meaning “seed,” “germ,” “semen,” in the formation of compound words: spermophyte.
or spermagonium [spur-muh-goh-nee-uh m] /ˌspɜr məˈgoʊ ni əm/ noun, plural spermogonia [spur-muh-goh-nee-uh] /ˌspɜr məˈgoʊ ni ə/ (Show IPA). Botany, Mycology. 1. one of the cup-shaped or flask-shaped receptacles in which the spermatia of certain fungi and red algae are produced. spermogonium /ˌspɜːməˈɡəʊnɪəm/ noun (pl) -nia (-nɪə) 1. a reproductive body in some fungi and lichens, […]
noun, Chemistry. 1. a yellow, thin, water-insoluble liquid obtained from the sperm whale, used chiefly as a lubricant in light machinery, as watches, clocks, and scientific apparatus. noun 1. an oil obtained from the head of the sperm whale, used as a lubricant