supposite
/ˈsʌpəzɪt/ /ˈsʌpəsɪt/(also supposit)
noun
Philosophy. A being that subsists by itself, an individual thing or person; (occasionally) a being in relation to its attributes. Also (and earlier) called suppositum.
Origin
Late 16th century (in an earlier sense). From classical Latin suppositum suppositum.