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adj. Biology
Bursting through a surface or covering: erumpent apothecia.

[Latin ērumpēns, ērumpent-, present participle of ērumpere, to burst out; see erupt.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) bursting out or (esp of plant parts) developing as though bursting through an overlying structure
[C17: from Latin ērumpere to burst forth, from rumpere to shatter, burst]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ɪˈrʌm pənt)

bursting forth, as seeds or spores.
[1640–50; < Latin ērumpent-; see erupt]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The symptoms caused by citrus canker are pustules to necrotic lesions consisting of erumpent corky tissues surrounded by oily or water-soaked margins and yellow halo.
UREDINIA mainly hypophyllous with spots surrounded by light green rings, mostly in groups, confluent, rounded, dark brown, erumpent. UREDINIOSPORES are single celled, globose-ovoid or subglobose, 20-27.5 x 20-30 um, wall 1-1.5 um thick, light brown to reddish brown, smooth, germ pores equatorial and 1-2.
And for Chris Packham and the team to keep themselves interested by chucking in words like "corpuscular" and "erumpent" for us all to learn.
Sexual state: Ascomata immersed, initially erumpent becoming superficial, scattered, depressed-globose, some flattened at the base, opening a disc-like lid of brown prismatic cells with setae.
Perithecia globose to subglobose, blackish, 0.4-0.9 mm diam., embedded in the host tissue, with a long, cylindrical, slender neck; neck erumpent from the substratum surface, 1.2-1.6 mm; brownish masses of spores (cirri) are frequently observed above the necks.
In October, 1995, in North America, white erumpent sori were detected on the undersurfaces of leaves of a bed of Gerbera jamesonii that diagnose as white rust [22].
2) in small, loose to dense fascicles, occasionally solitary, arising from internal hyphae or hyphal aggregations, erumpent through the cuticle or emerging through stomata, erect, subcylindrical to geniculate-sinuous, often denticulate, simple, rarely branched, 10-70 X 3-8 [micro]m, continuous to 1-3-septate, pale olivaceous, olivaceous-brown to brown, wall thin to slightly thickened, smooth of almost so; conidiogenous cells integrated, terminal of conidiophores reduced to conidiogenous cells, 10-25 [micro]m long; conidiogenous loci conspicuous, often denticle-like, apex truncate, 1.5 3 [micro]m wide, non-pigmented to distinctly pigmented, but consistently unthickened.
For Scrabble players, let's try exigent, etiolated, epitomical, effulgent, esemplastic, erumpent, and embrasured.
From the mass of host cells in which parasite nuclei and mitochondria replicate, an erumpent thallus differentiates, protrudes from the host, and ultimately produces reproductive structures (spores, gametes).