Possible misspelling? More dictionaries have definitions for
active,
activex
-- could that be what you meant?
a constellation that is very easily recognized
It burns with a white light, in the proximity of the Milky Way, not far from a constellation that is very easily recognized by the arrangement of its principal stars in the form of a cross. — from Astronomy for Amateurs by Camille Flammarion
This tab, called Hiding in Plain Sight,
shows you passages from notable books where your word is accidentally (or perhaps deliberately?)
spelled out by the first letters of consecutive words.
Why would you care to know such a thing? It's not entirely clear to us, either, but
it's fun to explore! What's the longest hidden word you can find? Where is your name hiding?