pyrognomic
/ˌpʌɪrə(ʊ)ˈnɒmɪk/ /ˌpʌɪrə(ʊ)ˈnəʊmɪk/adjective
Of a mineral: becoming incandescent when heated, especially to relatively low temperatures; of or relating to such behaviour.
Origin
Mid 19th century; earliest use found in Edinburgh New Philosophical Journal. From pyro- + ancient Greek γνώμη means of knowing, mark, token + -ic, after German pyrognomisch.
- optic foramen
- optic ganglion
- optic glass
- optician
- opticist
- opticity
- optic lobe
- optic nerve
- optic neuritis
- optico-chemical
- opticociliary
- opticokinetic
- optic papilla
- optic peduncle
- optics
- optic stalk
- optic tectum
- optic thalamus
- optic tract
- optic tube
- optic tubercle
- optic vesicle
- optima
- optimacy
- optimal