bis-
Word Rarity
Rare
Frequency: Zipf frequency 3.34 in modern English
5
Scrabble Score
3
Letters
2
Syllables
3
Unique Chars
Meaning
prefix
A variant of di- used to indicate that the component that does not take the prefix occurs twice in the compound: a bisoxide is of the form B₂O (cf. dioxide for XO₂)
Obsolete
prefix
A variant of di-, used for substitutions of two complex rather than simple units.
Example Sentences
- "Bis (η⁶-arene) metal complexes have been made for many transition metals by the Al/AlCl₃ reduction method."