The word "Latinx" seems to be the English shorthand for saying "Latino and/or Latina", where Latino includes men and Latina includes women.
How does one pronounce "Latinx"?
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It's pronounced "La-teen-ex,” based on these sources:
The word “Latinx” (pronounced “La-teen-ex”) has been used more and more lately.
Why People Are Using The Term ‘Latinx’ by Tarisha Love Ramirez and for Huffpost
Latinx, pronounced "La-teen-ex," includes the numerous people of Latin American descent whose gender identities fluctuate along different points of the spectrum, from agender or nonbinary to gender non-conforming, genderqueer and genderfluid.