1) Receptor 2) Sense organ 3) Sensory receptor 4) Sensory receptor 
A thermoreceptor is a sensory receptor, or more accurately the receptive portion of a sensory neuron, that codes absolute and relative changes in temperature, primarily within the innocuous range. In the mammalian peripheral nervous system, warmth receptors are thought to be unmyelinated C-fibres (low conduction velocity), while those responding t...
(from the article `thermoreception`) ...for example, can function both in a zoo during summer heat and on an ice floe in frigid Arctic waters. This kind of flexibility is supported by ... Thermoreceptors are of two types, warmth and cold. Warmth fibres are excited by rising temperature and inhibited by falling temperature, and cold ... ...
A receptor that is sensitive to heat. ... (05 Mar 2000) ... 
(thur″mo-re-sep´tәr) a nerve ending sensitive to stimulation by heat.
Type: Term Pronunciation: ther′mō-rē-sep′tŏr, -tōr Definitions: 1. A receptor that is sensitive to heat.
[n] - a sensory receptor that responds to heat and cold
thermoreceptor Any nerve ending or other sensory receptor that is specifically sensitive to heat or cold.
noun a sensory receptor that responds to heat and cold