What is binomail?

Answer 1

You could be thinking of "Binomial Nomenclature", the classification system used for plants and animals that gives them the scientific two-names - Carcharodon charcharias (The Great White Shark), Homo sapiens (People) etc.

Answer 2

I believe you may have a typo. I assume you are referring to the term "binomial." A binomial is a polynomial with two terms, typically seen in the form of "ax + b" where "a" and "b" are coefficients and "x" is a variable. Binomials are common in algebra and are used in various mathematical operations.