erumpent

adjective
erum·​pent | \ə̇ˈrəmpənt, ēˈ-\

Definition of erumpent 

1 : tending to grow out vigorously from a substrate so as to burst through or rise above its surface certain erumpent fungi that parasitize leaves

2 of the fruiting bodies of some fungi and algae : grown or burst through a surface (as of a host's tissue) so as to form a projecting mass the erumpent fruiting bodies of some rusts erumpent acervuli forming black dots on the leaves

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History and Etymology for erumpent

Latin erumpent-, erumpens, present participle of erumpere

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