An equation that describes the flow of a fluid through a porous medium.

Any of a number of mathematical formulae for calculating the relative strengths of military forces.

The rule illustrated by the Cassie equation.

Synonym of common law

Synonym of common law

The husband of one's child.

The mother of one's spouse. / A mother-in-law apartment. / A mother-in-law sandwich. / (dated) A stepmother.

(law) The area of law pertaining to crime and punishment. / (law) A specific statute, ordinance, regulation, or other source of law that deems an action to be a crime.

The sister of one's spouse. / The wife of one's sibling. / The wife of the sibling of one's spouse. / The sister of the spouse of one's sibling.

Someone's niece's husband / Someone's sibling's son-in-law / Someone's spouse's sibling's son-in-law / Someone's husband's nephew. (Usually called a nephew.)