same-sexness noun2 •The condition of having or being of the same sex.Thus since twins occur in almost one percent of the cases, the probability of same-sexness would be increased from .500 to at most .502, […] — 1949 •Homosexuality.Though he dwells mostly on the affairs of men — which would make the same-sexness an obvious result — instances in which women suffer punishment are usually engineered by other women. — 2005