Poincaré

American  

[pwahn-kah-rey, pwan-ka-rey] / pwɑn kɑˈreɪ, pwɛ̃ kaˈreɪ /

noun

1. Jules Henri 1854–1912, French mathematician.

2. his cousin Raymond 1860–1934, French statesman: president of France 1913–20.

---

Poincaré British  

/ pwɛ̃kare /

noun

1. Jules Henri (ʒyl ɑ̃ri). 1854–1912, French mathematician, physicist, and philosopher. He made important contributions to the theory of functions and to astronomy and electromagnetic theory

2. his cousin, Raymond (rɛmɔ̃). 1860–1934, French statesman; premier of France (1912–13; 1922–24; 1926–29); president (1913–20)

---

Example Sentences

The concept of gravitational waves dates back to 1893 and 1905, when Oliver Heaviside and Henri Poincaré first proposed related ideas.

From Science Daily • Oct. 18, 2025

That group of paintings was made during his time in Hollywood, but they derive from photographs of complex mathematical models by physicist Henri Poincaré that the artist shot in Paris.

From Los Angeles Times • Oct. 29, 2024

For me, the quest for a breakthrough often requires getting myself into literal motion; one small step for Poincaré but a whole sequence of steps for me.

From The New Yorker • Nov. 7, 2019

It ends with a twist: Yau does not believe that the Poincaré conjecture — the most important question in topology in the twenty-first century — has truly been settled.

From Nature • Mar. 12, 2019

I heard that night that the King was going to meet M. Poincaré, the French President, at the house of Sir Douglas Haig, and very possibly General Joffre might be there, as well.

From How I Filmed the War A Record of the Extraordinary Experiences of the Man Who Filmed the Great Somme Battles, etc. by Malins, Geoffrey H.