(organic chemistry) Any polycyclic compound having a single atom (usually carbon) as the only common member of two rings.

A microscope with more than one lens, arranged so that the image formed by one lens is further magnified by another.

(physics) Any combination of simple machines working together

plural of chemical compound

(grammar) Two or more imperative clauses joined in a single sentence / (grammar, in some languages) A word constructed from the imperative of a verb plus one or more pronouns

(historical) A householder who pays the rates in his rent, the landlord being immediately chargeable with them.

A broken bone communicating with a co-existing skin wound.

plural of compound fracture

plural of compound householder

plural of compound pendulum