decalumen

/ˈdɛkəluːmɪn/

Etymology

From deca- + lumen.

decalumen means A unit of luminous flux equal to ten lumens. Lexicurio rates it Rare gem — a strength score of 82 out of 100.

noun

A unit of luminous flux equal to ten lumens.“If the aquarium is placed where it receives insufficient daylight, artificial lighting by means of ordinary incandescent lamps should be employed. For good plant growth 2 decalumens of luminous flux per square decimetre of water surface […]”