(1):
(n.) An heir apparent.
(2):
(a.) Capable of being seen, or easily seen; open to view; visible to the eye; within sight or view.
(3):
(a.) Clear or manifest to the understanding; plain; evident; obvious; known; palpable; indubitable.
(4):
(a.) Appearing to the eye or mind (distinguished from, but not necessarily opposed to, true or real); seeming; as the apparent motion or diameter of the sun.