Genitalia not clearly male or female.

In computer science, an ambiguous grammar is a context-free grammar for which there exists a string that can have more than one leftmost derivation or parse tree.

Group of neurons with varied functions.

Ambiguous images or reversible figures are visual forms that create ambiguity by exploiting graphical similarities and other properties of visual system interpretation between two or more distinct image forms.

a loss that occurs without a significant likelihood of reaching emotional closure or a clear understanding.