normal
UK: ˈnɔːməl | US: ˈnɔːrməl
adj. conforming to a standard; usual, typical, or expected
adj. (Mathematics) perpendicular; at a right angle
n. the usual or average state, degree, or condition
The word "normal" derives from the Latin norma, meaning "carpenter’s square" or "rule," symbolizing a standard of measurement. By the 17th century, it evolved in French (normal) to denote conformity to a rule or pattern. The suffix -al (from Latin -alis) forms adjectives, giving "normal" its modern sense of "typical" or "standard." The mathematical meaning ("perpendicular") reflects the original idea of a square’s right angle as a foundational standard.
Her blood pressure returned to normal after the treatment.
It’s normal to feel nervous before a big presentation.
The teacher emphasized the importance of normal distribution in statistics.
The two lines intersect at a normal angle.
Despite the chaos, he tried to maintain a sense of normalcy.