Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
ft-l is a noun meaning "a former luminance unit equal to one lumen per square foot". It carries one recorded sense.
a former luminance unit equal to one lumen per square foot
Definitions, synonyms and semantic relations for ft-l come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.