noun Etymology: New Latin pinnula, from Latin, diminutive of pinna Date: 1748 any of the secondary branches of a plumose organ especially of a crinoid, one of the ultimate divisions of a twice pinnate leaf
PINNULE
Meaning of PINNULE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012