The white poplar (Populus alba).

(biblical) The son of Adam and Eve who was killed by his brother Cain. / A male given name from Hebrew. / A surname originating as a patronymic.

plural of abele

A surname.

plural of Abel test

(chemistry, usually capitalized) A test to determine the flash point of a volatile oil. / (chemistry, usually capitalized) A test for the stability of smokeless powder and similar explosives.

plural of Abel sum

(mathematical analysis) Given a power series f(x)=∑ₙ₌₀ ᪲a_nxⁿ that is convergent for real x in the open interval (0, 1), the value lim _(x→1⁻)∑ₙ₌₀ ᪲a_nxⁿ, which is assigned to f(1)=∑ₙ₌₀ ᪲a_n by the Abel summation method (or A-method).

(mathematics) Any member of a certain polynomial sequence whose nth term is of the form p_n(x)=x(x-an)ⁿ⁻¹.

plural of Abel polynomial