- poikilothermic, poikilothermal, poikilothermous
- 1. Varying in temperature according to the temperature of the surrounding medium; denoting the so-called cold-blooded animals, such as the reptiles and amphibians, and the plants. 2. Capable of existence and growth in media of varying temperatures. Cf.:heterothermic, homeothermic. 3. Causing a disruption of normal hypothalamic thermoregulatory function, as seen with drugs such as phenothiazines. SYN: cold-blooded, hematocryal. [poikilo- + G. therme, heat]
Medical dictionary. 2011.