Definition
A mathematical expression made up of two terms joined by a plus or minus sign, such as (a + b) or (x − 3).
Plain English
A short math expression with exactly two parts, connected by a plus or minus sign.
Context Anchor
Seen in math, engineering, avionics, and technical training material when formulas are being explained.
Derivation
From Latin bi- meaning 'two' and nomen meaning 'name' or 'term.' Literally 'two terms.' Knowing this makes the meaning easy to remember: bi (two) + nomial (terms).
Why Pilots Care
Most pilots will not use this word in normal cockpit work, but understanding it can help when reading technical explanations, aircraft systems material, or training formulas.
Intuition Check
Do not read “binomial” as just meaning “two names” in ordinary language. In technical use, it means a math expression with exactly two terms.
Example Sentence 1
The performance equation in the textbook was a simple binomial that the student solved in a few seconds.
Example Sentence 2
She used the binomial to estimate how a minor weight shift would affect the glide path.