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Definition of CIS

Cis is a morpheme that is used to mean being next to something or someone or, also, being on the side here. It comes from the Latin word cis homograph and homophone and its use is fully accepted in the Spanish Language.

Some words that use the morpheme cis as a prefix are the following:

  • Cismontano: from here side of the mountain
  • Cisandino: from here side of the Andes
  • Cisgender: on the gender side here

What is a CIS person?

Cis is shorthand for a person who identifies as cisgender . This term was coined as a contrast to the word transgender, since in different areas of knowledge the prefixes cis and trans are antonyms.

The word cisgender was introduced in 1991 by a German-born psychiatrist and sexologist named Volkmar Sigusch. The term is classified as a neologism that designates a person who fully identifies with his sexual phenotype.

In other words, a cis person is one who identifies their gender with the sex they were born with. For example, if a person at birth was determined as a man and in his sexual maturity he feels identified with the male gender, this person can call himself cisgender or simply cis.

Cis and / or straight?

In practical terms, one might think that a cis person would clearly be a heterosexual person. However, semantically the concepts are totally different because the first refers to gender identity and the second to sexual orientation.

A cis person could easily be homosexual, since, despite identifying as male or female, their sexual attraction may be inclined towards the same gender. Therefore, the terms cisgender and heterosexual cannot be understood as synonyms.