— halogenation /hal'euh je nay"sheuhn, hal oj'euh-/ , n.
/hal"euh jeuh nayt', hay"leuh-/ , v.t., halogenated, halogenating . Chem.
1. to treat or combine with a halogen.
2. to introduce a halogen into (an organic compound).
[ 1910-15; HALOGEN + -ATE 1 ]