Transmasculine, or Transmasc, is an umbrella term for individuals whose gender is partially or fully masculine, and does not correspond with their birth sex/assigned gender at birth, or otherwise conform to conventional notions of sex and gender. This includes trans men, whose gender is masculine in some way.
Transmasculine individuals can also identify as other, non-masculine genders as well. For example, an androgyne individual may identify as transmasculine, though typically, one's masculine identities are more significant than one's non-masculine identities, or one wants to emphasize their masculine identity.
Transmasculine individuals are typically assigned female at birth, though they may also possibly be assigned X at birth, assigned intersex at birth or unassigned at birth. An assigned male at birth individual may also identify as Transmasculine if their assigned gender or sex is not the same as their gender identity. A simple example of this is an assigned male at birth who identifies as a demiboy.
Transmasculine is sometimes used, not as a gender identity, but as a way to describe anyone who is assigned female at birth and undergoes masculinization, either through surgery, hormone replacement therapy, or other methods. Under this definition women who take testosterone to attempt to appear more masculine would be considered transmasculine.
 
The most common Transmasculine Pride Flag was created by an unknown individual on or before July 4, 2015. The flag has no confirmed meaning, but uses the same shades of pink and blue on the transgender flag.
 
https://www.deviantart.com/pride-flags/art/Trans-Man-Transmasculine-1-543925972
 
 
Disclaimer: Terms and labels within the community are largely adopted through self-identification, and their definition may not be agreed upon by all who identify with them. Descriptions provided here are an informal overview and are for informational purposes only. We cannot be held responsible for the contents or accuracy of any pages referenced by external links.