There’s a range of words and terms you may come across as you find out more about gender and your child.
Hopefully these definitions will help from (GLAAD website):
A term used to describe some people whose gender expression is different from conventional expectations of masculinity and femininity. Please note that not all gender non-conforming people identify as transgender; nor are all transgender people gender non-conforming. Many people have gender expressions that are not entirely conventional — that fact alone does not make them transgender. Many transgender men and women have gender expressions that are conventionally masculine or feminine. Simply being transgender does not make someone gender non-conforming. The term is not a synonym for transgender or transsexual and should only be used if someone self-identifies as gender non-conforming.
Altering one’s birth sex is not a one-step procedure; it is a complex process that occurs over a long period of time. Transition includes some or all of the following personal, medical, and legal steps: telling one’s family, friends, and co-workers; using a different name and new pronouns; dressing differently; changing one’s name and/or sex on legal documents; hormone therapy; and possibly (though not always) one or more types of surgery. The exact steps involved in transition vary from person to person. Avoid the phrase “sex change.”
An umbrella term for people whose gender identity and/or gender expression differs from what is typically associated with the sex they were assigned at birth. People under the transgender umbrella may describe themselves using one or more of a wide variety of terms – including transgender. Some of those terms are defined below. Use the descriptive term preferred by the individual. Many transgender people are prescribed hormones by their doctors to change their bodies. Some undergo surgery as well. But not all transgender people can or will take those steps, and a transgender identity is not dependent upon medical procedures.Transsexual (adj.)
People who were assigned female at birth but identify and live as a man may use this term to describe themselves. They may shorten it to trans man. (Note: trans man, not “transman.”) Some may also use FTM, an abbreviation for female-to-male. Some may prefer to simply be called men, without any modifier. It is best to ask which term an individual prefers.
People who were assigned male at birth but identify and live as a woman may use this term to describe themselves. They may shorten to trans woman. (Note: trans woman, not “transwoman.”) Some may also use MTF, an abbreviation for male-to-female. Some may prefer to simply be called women, without any modifier. It is best to ask which term an individual prefers.
A term used by some people who experience their gender identity and/or gender expression as falling outside the categories of man and woman. They may define their gender as falling somewhere in between man and woman, or they may define it as wholly different from these terms. The term is not a synonym for transgender or transsexual and should only be used if someone self-identifies as genderqueer.
A term used by some to describe people who are not transgender. “Cis-” is a Latin prefix meaning “on the same side as,” and is therefore an antonym of “trans-.” A more widely understood way to describe people who are not transgender is simply to say non-transgender people.
Gender Dysphoria (definition form Transgender Victoria)
This is a medical term used at times to explain transgendered people and biological theories that result in a difference between the gender a person Identifies with and the physical sex attributes of their body.