Dictionary

A person who holds to a form of agnosticism, especially uncertainty of the existence of a deity.

Of or relating to agnosticism or its adherents.

Example: His agnostic viewpoint is summarized in his book.

Doubtful or uncertain about the existence or demonstrability of God or other deity.

Example: She left the church when she became agnostic.

Of a software component etc.: unaware or noncommittal regarding the specific nature of the components or input with which it interacts.

Example: The socket communications layer is agnostic with regard to its underlying transport mechanism -- it is “transport-agnostic”.

(usually with a prepositional phrase) Having no firmly held opinions on an issue or matter of uncertainty.

Example: He says he's agnostic concerning the Secretary's claims.