androgen: a male sex hormone, such as testosterone

androgynous: refers to a combination of masculine and feminine, often in appearance

down-low: a man who identifies as heterosexual but has sex with men

dysphoric: a state of unease or dissatisfaction with life

estrogen: a steroid hormone that is the primary female sex hormone; it promotes the development of female characteristics of the body

FTM (female to male): a person assigned female at birth but who identifies as male; a trans man

homophobic: having an extreme revulsion to homosexuals and homosexuality

hormone: a chemical released by a cell or a gland that affects cells in other parts of the body

intersex: a genetic condition in which a person is born with external genitalia and internal sex organs that are in between typically male and typically female

metrosexual: a male with a strong aesthetic sense who spends a great deal of effort on his appearance and lifestyle

mindfulness: a heightened consciousness or awareness of something or someone else

MTF (male to female): a person assigned male at birth but who identifies as female; a trans woman

neuron: a nerve cell that processes and transmits information by electrical and chemical signaling

pansexual: having a sexual preference that is not limited by gender identity or sexual orientation

placement: refers to residential treatment centers or facilities

pound: slang for a manly greeting

synapse: a place or junction between two cells where a nerve impulse is transmitted from one neuron to another

testes: components of the reproductive and endocrine systems in male-bodied people; their primary function is to produce sperm and androgens, mostly testosterone

testosterone: a steroid hormone that plays a key role in the development of male reproductive tissues, testes, and prostate, as well as secondary sexual characteristics such as increased muscle, bone mass, and body hair

transgender: a general term that refers to a person whose gender identity, expression, or behavior does not conform to that typically associated with the sex to which they were assigned at birth

transphobia: having an extreme revulsion to transgender people