Word: luminal
Part of speech: Adjective
Syllables: lu
mi
nal
Definition: light-speed; having the speed of light (usually in the void)
Morphemes:
Affix: lumen
Language: en
PoS: Noun
Meaning: In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.
Etymology Compounds: Affix: lūx
Language: la
Decoded: lux
PoS: Noun
Meaning: light (of the sun, stars etc.)
Affix: -men
Language: la
Decoded: -men
PoS: Suffix
Meaning: forms neuter nouns of the third declension
Affix: -al
Language: en
PoS: Suffix
Meaning: Forming nouns, especially of verbal action.