[pahy-ruh-juh n, -jen] /ˈpaɪ rə dʒən, -ˌdʒɛn/
a substance, as a thermostable bacterial toxin, that produces a rise in temperature in a human or animal.
any of a group of substances that cause a rise in temperature in an animal body
1858, as a proposed word for “electricity,” from pyro- + -gen. Meaning “fever-producer” is from 1896. Related: Pyrogenic; pyrogenetic. Greek pyrogenes meant “born in fire, wrought by fire.”
pyrogen py·ro·gen (pī’rə-jən)
A substance that produces a fever.
A polypeptide that produces fever by causing metabolic changes in the hypothalamus. Pyrogens are either exogenous (produced by infectious agents) or endogenous (produced by cells in the body such as macrophages).
[pahy-ruh-jen-ik] /ˌpaɪ rəˈdʒɛn ɪk/ adjective 1. producing or produced by heat or fever. 2. Also, pyrogenetic [pahy-roh-juh-net-ik] /ˌpaɪ roʊ dʒəˈnɛt ɪk/ (Show IPA). Geology. produced by heat, as the anhydrous minerals of an igneous rock. /ˌpaɪrəʊˈdʒɛnɪk/ adjective 1. produced by or producing heat 2. (pathol) causing or resulting from fever 3. (geology) less common words […]
[pahy-roj-uh-nuh s] /paɪˈrɒdʒ ə nəs/ adjective, Geology. 1. (def 2).
pyroglobulin py·ro·glob·u·lin (pī’rō-glŏb’yə-lĭn) n. Any of various immunoglobulins that coagulate when heated, usually associated with multiple myeloma or macroglobulinemia.
[pahy-ruh g-nos-tiks] /ˌpaɪ rəgˈnɒs tɪks/ plural noun 1. those properties of a mineral that it exhibits when heated, alone or with fluxes, in the blowpipe flame, as the fusibility, intumescence, or other phenomena of fusion, flame coloration, etc. /ˌpaɪrɒɡˈnɒstɪks/ plural noun 1. the characteristics of a mineral, such as fusibility and flame coloration, that are […]