(genetics) A gene in Drosophila melanogaster that encodes a receptor tyrosine kinase protein essential to the development of R7 cells in the embryonic eye.

(colloquial) Any time close to seven o'clock.

plural of sevensome

(rare) A group of seven persons or things.

(US, colloquial) A girl's seventeenth birthday, or seventeenth-birthday party. It is often used to mitigate a failed sweet sixteen birthday.

plural of seventieth

A Protestant Christian denomination (one of its founders was Ellen White), emphasizing Sabbath observance, a healthy diet, and the soon return of Jesus Christ. It grew out of the Millerite movement (Millerism).

(UK, obsolete) The value of seven old pennies.

(UK, obsolete, rare) Construed as singular.

plural of twenty-seventh