DICTIONARY ENTRY
4 SYLLABLES
focal ratio
/'foʊkəl_'reɪʃoʊ/ · foʊkəlreɪʃoʊ
Focal ratio has 4 syllables: fo · cal ra · ti · o.
fo
01
cal ra
02
ti
03
o
04
noun. The ratio of the focal length to the diameter of a (camera) lens system.
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