Today in Christian History – April 21

1869 – Thomas Huxley first publicly uses the word “agnostic” at a meeting of the London Metaphysical Society to describe intellectuals who, like himself, are unable to come to certain conclusions on big issues such as the existence of God.

http://www.christianhistoryinstitute.org/today/4/21

Thomas Henry Huxley, an English biologist, coined the word „agnostic” in 1869. Earlier thinkers, however, had written works that promoted agnostic points of view, such as Sanjaya Belatthaputta, a 5th-century BCE Indian philosopher who expressed agnosticism about any afterlife; and Protagoras, a 5th-century BCE Greek philosopher who expressed agnosticism about „the gods”. The Nasadiya Sukta in the Rigveda is agnostic about the origin of the universe.

http://en.wikipedia.org/wiki/Agnosticism