(chemistry) any compound of general formula RN=N-NR₂ where not all R = H

(chemistry) any compound of general formula R₂C=N⁺=N⁻

(chemistry) any compound having the general formula R-N₂⁺ X⁻, especially one in which R is an aryl residue; they are important as intermediates in the production of azo dyes

(obsolete, organic chemistry) Synonym of oxime

(chemistry) any compound in which a metal atom is located between the faces of two planes of atoms, especially between two rings

(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.

(fencing) An attack consisting of more than one feint.

A visual organ found in arthropods such as insects and crustaceans. It consists of one to thousands of tiny independent photoreception units.

plural of compound eye