/sep"teuh ner'ee/ , adj., n., pl. septenaries .
adj.
1. of or pertaining to the number seven or forming a group of seven.
2. septennial.
n.
3. a group or set of seven.
4. a period of seven years.
5. the number seven.
6. Pros. a line of seven feet.
[ 1570-80; septenarius, equiv. to septen ( i ) seven each ( sept ( em ) SEVEN + -eni distributive suffix) + -arius -ARY ]