Noun: pennibrachium
| Singular | pennibrachium |
| Plural | pennibrachia |
Sample Sentences
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Some dromaeosaurid, troodontid, oviraptorosaur and therizinosaur specimens show the presence of what we term a ‘pennibrachium’, a forelimb bearing long feathers that form a planar, wing-like surface but are not necessarily used in aerial locomotion. [2010 July 7, Corwin Sullivan, “The asymmetry of the carpal joint and the evolution of wing folding in maniraptoran theropod dinosaurs”, in Proceedings of the Royal Society B: Biological Sciences, volume 277, number 1690, page 2027:]
Nouns inflected like pennibrachium
meroplasmodium,
paleostriatum,
urodeum,
siphonium,
cladodium,
apogalacticum,
surrogatum,
siglum,
accubitum,
endoplasmic reticulum,
microsclerotium,
xystum,
archipterygium,
pleiochasium,
tripudium,
endosporium,
xenium,
separatum,
viscidium,
zoœcium, etc. (List truncated at 20 nouns)
Etymology
From Latin penna (“feather”) + brachium (“arm”). Coined by Sullivan et al. in 2010. See: Latin Nouns '
penna'.