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filo- (2), -filo (2) (Affix) "leaf"
Very late 19th cent. Borrowed from Ancient Greek φύλλον (phyllon) 'id.' From Proto-Indo-European *bhel-, *bhl̥h3- "leaf," "blossom."
Indo-European
Celtic
Middle Irish bláth "blossom," Middle Welsh blawt 'id.,' Old Cornish blodon 'id.,' Old Breton bloduu 'id.'
Germanic
Old Norse blað "leaf," Old High German blat 'id.,' Old Saxon blad 'id.,' Old Frisian bled 'id.,' Old English blæd (English blade)
Tocharian
A pält "leaf," B pilta 'id.'