Synonym of plumule (“the first bud, or growing point, of a plant embryo, situated above the cotyledons”)
In the obsolete theory of pangenesis propounded by the English scientist Charles Darwin (1809–1882): a hypothetical particle once thought to be the basis of heredity.
Synonym of dendritic spine (“a small membranous protrusion from the dendrite of a neuron that typically receives input from a single axon at the synapse”)
A leaflet or primary segment of a pinnate compound leaf.
The visible part of the ear that resides outside of the head, the auricle; outer ear excluding the ear canal.
A feather, wing, fin, or other similar appendage.