Meaning of BIS- in English

BIS-

combining form

Etymology: Latin, from bis

1.

a. : both : of or belonging to both — chiefly in anatomical or medical words of which the second constituent begins with a vowel

bis ischiatic

b. : two

bis marine

2. : twice : doubled — especially in complex chemical expressions

bis dimethylamino-

bis quarternary

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.