That which is not equal. It also means a type of plant.[1]
Also [sc. attested is] ἀνισοφυές , [meaning something] unequal in nature.[2]
One should recognize that some opposites are expressed by privation of the other [element], such as: anison is the opposite of ison, [and is] a privative noun. For it does not mean an innate nature, like bad is the opposite of good; rather it means a denial of the opposite in a nature which embraces both. For anison is not ison in those respects where nature embraces equality too. Likewise anomoion ["dissimilar"] is not homoion ["similar"] in circumstances embracing similarity. Such a thing [is] a privation: for denial is [applicable] where nature embraces possession. Conversely "dissimilar" too [is] not a privation; rather [they are opposites], the one of "equal", the other of "similar". The differences between these and the proper opposites [lie in the fact] that there is no progession from privation to possession; these [words] exchange such terms for their opposites. So anison might be ison, and anomoion homoion.[3]
Concerning the equal and unequal, look under ἀμπλάκημα .[4]