a sexual attraction to (or sexual relations with) persons of the same sex
"Homosexuality describes a person's deep emotional and physical attraction toward others of their own gender."
The state of being sexually attracted primarily or exclusively to persons of the same sex.
"Homosexuality refers to the state of being sexually attracted primarily or exclusively to persons of the same sex."
In plain English: Homosexuality is when someone feels romantic love and sexual attraction toward people of their own gender.
"The government passed new laws aimed at protecting individuals from discrimination based on their sexuality and orientation."
Usage: This term describes an orientation and should not be used as a verb or adjective; instead, use "homosexual" carefully in formal contexts or prefer identity-first phrasing like "gay person." Avoid using it casually when referring to individuals, as direct labels can feel stigmatizing compared to terms like "same-sex attraction."
The word "homosexuality" was formed from the roots homo- and sexuality to match existing terms like German Homosexualität. It entered English after being coined by journalist Karl Maria Kertbeny in 1869, with a French equivalent appearing shortly afterward.