1. the 16th letter of the Greek alphabet (II, π).
2. the consonant sound represented by this letter.
3. Mathematics. the letter π, used as the symbol for the ratio of the circumference of a circle to its diameter. the ratio itself:
"trials can be ii."
"buildings can be ii."
"products can be ii."
"systems can be ii."
"studies can be ii."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.