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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Merriam-Webster unabridged
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