biserrate

biserrate

[bahy-ser-eyt, -it]
adjective Botany.
notched like a saw, with the teeth also notched; doubly serrate.

Origin:
1825–35; bi-1 + serrate

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World English Dictionary
biserrate (baɪˈsɛreɪt, -ɪt)
 
adj
1.  botany (of leaf margins, etc) having serrations that are themselves serrate
2.  zoology serrated on both sides, as the antennae of some insects

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