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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

location go
a point or extent in space

space go
an empty area (usually bounded in some way between things)

opening, gap go
an open or empty space in or between things

hole go
an opening into or through something

aperture go
a natural opening in something

pore, stoma, stomate
a minute epidermal pore in a leaf or stem through which gases and water vapor can pass

noun.plant

3 Subcategories

germ pore go
a pore in the outer wall of a spore or pollen grain through which the germ tube or pollen tube makes its exit on germination
hydathode, water pore, water stoma go
a pore that exudes water on the surface or margin of a leaf of higher plants
lenticel go
one of many raised pores on the stems of woody plants that allow the interchange of gas between the atmosphere and the interior tissue