sporopollenin


spo·ro·pol·len·in

noun \ˌspr-ə-ˈpä-lə-nən\

Definition of SPOROPOLLENIN

:  a relatively chemically inert polymer that makes up the outer layer of pollen grains and some spores

Origin of SPOROPOLLENIN

International Scientific Vocabulary spor- + pollen + 1-in
First Known Use: 1931

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