Definitions of terminology regarding sex and gender include the following:

• Sex: refers to biological characteristics, such as genitals, chromosomes, and hormones, used to categorize a person as male or female sex (rarely, people are born with ambiguous genitals that include both male and female characteristics, which is called intersex). When a person is transgender, a phrase used to refer to their birth sex is "sex assigned at birth"; a person may be a male assigned at birth (AMAB) or female assigned at birth (AFAB).

• Gender identity: How people see themselves, whether as masculine, feminine, or some other gender identity, which may or may not correspond to the sex they were assigned at birth. Examples of gender-diverse identities include genderqueer, gender nonbinary, and other gender identities.

• Gender expression: How people present themselves in public in terms of gender. It may include the way people dress, speak, or wear their hair.

• Gender dysphoria: A diagnosis a doctor may make when a person with gender incongruence experiences significant psychological or functional impairment associated with the gender incongruence. The diagnosis is defined by the person's distress rather than by the presence of gender incongruence. The distress is typically a combination of anxiety, depression, and irritability.

• Cisgender: Used to describe people whose gender identity and gender expression align with the sex assigned at birth.

• Transgender: A general term that describes people with gender identities or gender expressions that differ from those typically associated with the sex they were assigned at birth. (Transsexual is an outdated term that is no longer used by experts in gender identity.)

• Gender nonconforming: Describes people whose gender identity or gender expression differs from the gender norms associated with the sex they were assigned at birth.

• Genderqueer: Describes people whose gender identity is not strictly male or female and may include both or neither.

• Gender nonbinary: Describes people who have more than one gender identity simultaneously or at different times.

• Transwomen: People who were assigned male at birth (AMAB) and have adopted a gender identity as a woman, regardless of whether they have undergone any medical gender transition.

• Transmen: People who were assigned female at birth (AFAB) and have adopted a gender identity as a man, regardless of whether they have undergone any medical gender transition.

• Trans-affirmative: Being aware, respectful, and supportive of the needs of transgender and gender-nonconforming individuals.

• Sexual orientation: Pattern of emotional, romantic, and/or sexual attractions that people have toward others.