a (S) Indistinct or unapparent; not evident, plain, or manifest: also invisible, imperceptible, inapprehensible by human vision--the Deity, the soul &c. 2 Unknown--an algebraic
a (S) Indistinct or unapparent; not evident, plain, or manifest: also invisible, imperceptible, inapprehensible by human vision--the Deity, the soul &c. 2 Unknown--an algebraic