The stone of certain fruits, such as peaches or plums.
The human clitoris.
The nucleus and electrons of an atom excluding its valence electrons.
For a category with zero morphisms: the equalizer of a given morphism and the zero morphism which is parallel to that given morphism.
A set of pairs of a mapping's domain which are mapped to the same value.
A single seed or grain, especially of corn or wheat.
A small mass around which other matter is concreted; a nucleus; a concretion or hard lump in the flesh.
The set of members of a fuzzy set that are fully included (i.e., whose grade of membership is 1).
The core, center, or essence of an object or system.
The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
A function used to define an integral transform.
The core engine of any complex software system.
The central (usually edible) part of a nut, especially once the hard shell has been removed.
For a given function (especially a linear map between vector spaces), the set of elements in the domain which are mapped to zero; (formally) given f : X → Y, the set {x ∈ X : f(x) = 0}.
To enclose within a kernel
To crenellate
An edible fruit produced by the pear tree, similar to an apple but typically elongated towards the stem.
A desaturated chartreuse yellow colour, like that of a pear.
The wood of the pear tree (pearwood, pear wood).
avocado, alligator pear
A type of fruit tree (Pyrus communis).
Choke pear (a torture device).