pinnation

pinnation

[pi-ney-shuhn]
noun Botany.
pinnate condition or formation.

Origin:
1870–75; pinnate + -ion

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World English Dictionary
pinnate or pinnated (ˈpɪneɪt, ˈpɪnɪt)
 
adj
1.  like a feather in appearance
2.  (of compound leaves) having the leaflets growing opposite each other in pairs on either side of the stem
 
[C18: from Latin pinnātus, from pinna feather]
 
pinnated or pinnated
 
adj
 
[C18: from Latin pinnātus, from pinna feather]
 
'pinnately or pinnated
 
adv
 
pin'nation or pinnated
 
n

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