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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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Biserrate is always a great word to know.

So is gametophyte generation. Does it mean:

phase in plant life which begins with a spore produced by meiosis

plants with the vascular tissues xylem and phloem for transporting water and nutrients

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Collins

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

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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biserrate

bi·ser·rate