Dictionary

sept- en · X

Etymology

From Latin septem (“seven”).

Meanings

1. (morpheme) Seven: forming words relating to seven.
2. (morpheme) Used for the digit seven to form systematic element names of elements whose existence has been predicted, and which have not yet been given a trivial name.
   • un- (“1”) + bi- (“2”) + sept- (“7”) + -ium (element suffix) → unbiseptium (“element 127”)