This unsmoked, wet-cured ham is the sine qua non of Parisian butcher shops: a light, ephemeral meat, sweet but umami.
That accumulation of identities is already a sine qua non when speaking of Hispanics, like Zimmerman.
In the land of the industrial revolution, foreign ownership and management is the sine qua non of industrial success.
sine reaped uncomprehending and resentful stares when he declined to join them.
A little further up the street I seen a sine what sed, "This is the door."
This enraged the President, and it was made a sine qua non, receive Mrs. Eaton, or quit the Cabinet.
We require every man in the Army, for that is the 'sine qua non' of victory.
The sine qua non of all poetry is absolutely correct grammar and freedom from redundancy.
It is the sine qua non of any hopeful outlook for the future of mankind.
Its first appearance is in Barnes, who quotes it from Athenagoras "sine auctoris nomine."
trigonometric function, 1590s (in Thomas Fale's "Horologiographia, the Art of Dialling"), from Latin sinus "fold in a garment, bend, curve, bosom" (see sinus). Used mid-12c. by Gherardo of Cremona in Medieval Latin translation of Arabic geometrical text to render Arabic jiba "chord of an arc, sine" (from Sanskrit jya "bowstring"), which he confused with jaib "bundle, bosom, fold in a garment."