Not real; unreal, imaginary.
Not real; not of the real numbers.
A nonreal number.
Artificial, not genuine.
Of, or relating to synthesis.
Produced by synthesis instead of being isolated from a natural source (but may be identical to a product so obtained).
Produced by synthesis, thought to have the same effect as its natural counterpart, but chemically different from it.
Pertaining to the joining of bound morphemes in a word (compare analytic).
Of a language, having a grammar principally dependent on the use of bound morphemes to indicate syntactic relationships (compare analytic).
A synthetic compound.