[pahy-ree-noid, pahy-ruh-noid] /paɪˈri nɔɪd, ˈpaɪ rəˌnɔɪd/
a spherical protein structure found within chloroplasts of certain algae and hornworts.
any of various small protein granules that occur in certain algae, mosses, and protozoans and are involved in the synthesis of starch
[pahy-ree-throid, -reth-roid] /paɪˈri θrɔɪd, -ˈrɛθ rɔɪd/ noun, Chemistry. 1. any of several synthetic compounds that are similar to but more persistent than natural . /paɪˈriːθrɔɪd/ noun 1. any of various chemical compounds having similar insecticidal properties to pyrethrin adjective 2. of or relating to such compounds
[pahy-ree-thruh m, -reth-ruh m] /paɪˈri θrəm, -ˈrɛθ rəm/ noun 1. any of several chrysanthemums, as Chrysanthemum coccineum, having finely divided leaves and showy red, pink, lilac, or white flowers, cultivated as an ornamental. 2. any of several chrysanthemums, as C. cinerariifolium, or C. coccineum, cultivated as a source of insecticides. 3. Pharmacology. the dried flower […]
pyreto- pref. Fever: pyretogenesis.
pyretogenesis py·re·to·gen·e·sis (pī’rĭ-tō-jěn’ĭ-sĭs, pĭr’ĭ-) n. The origin and mode of production of fever. py’re·to·ge·net’ic (-jə-nět’ĭk) adj.