Meanings
noundecalumen (plural decalumens)
plural decalumens
- 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 […]
1956, C. van Duijn, Diseases of Fishes, page 149
Origin
Cite this entry
APA
decalumen. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/decalumen
MLA
“decalumen.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/decalumen. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “decalumen,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/decalumen.
Source: decalumen on Wiktionary, CC BY-SA 4.0.