(linguistics) Of two or more speech varieties, able to be understood by one another's speakers.

plural of mutual fund

(finance) A form of collective investment in which money from many investors is pooled and invested in stocks, bonds, short-term money market instruments, or other securities under the direction of a fund manager.

A sexual activity in which two or more persons simultaneously masturbate themselves, usually while observing or otherwise communicating with one another.

plural of mutual masturbation

plural of mutual will

(information theory) A measure of the entropic (informational) correlation between two random variables.

(economics) The independent possession, by every individual, of the means of production, in a free market with minimal interest rates.

plural of mutual information

plural of mutual society