noun. The state or quality of being firm; compactness; hardness; solidity; stability; strength; steadfastness; resoluteness; constancy; fixedness; certainty: as, the firmness of jelly; firmness of flesh; firmness of union; the firmness of a purpose; the firmness of a judge.

noun. In phrenology, an organ situated toward the back part of the head, between self-esteem and veneration. Its function is said to be to produce determination, constancy, and perseverance.

noun. The state or quality of being firm.

noun. The state of being firm; strength; permanence; stability; hardness; resolution.

noun. the quality of being steady or securely and immovably fixed in place

noun. the property of being unyielding to the touch

noun. the muscle tone of healthy tissue

noun. the trait of being resolute