Definition of trans- in English:

trans-

prefix

  • 1Across; beyond.

    ‘transcontinental’
    ‘transgress’
    1. 1.1 On or to the other side of.
      ‘transatlantic’
      Often contraste with cis- (sense 1)
      ‘transalpine’
  • 2Through.

    ‘transonic’
    1. 2.1 Into another state or place.
      ‘transform’
      ‘translate’
    2. 2.2 Surpassing; transcending.
      ‘transfinite’
  • 3Referring or relating to people whose sense of personal identity and gender does not correspond with their birth sex.

    ‘transgender’
    Compare with cis- (sense 2)
    ‘transphobia’
  • 4usually trans-Chemistry
    Denoting molecules with trans arrangements of substituents.

    ‘trans-1,2-dichloroethylene’
    1. 4.1Genetics Denoting alleles on different chromosomes.

Origin

From Latin trans ‘across’.

Pronunciation

trans-

/træns-/