A kind of diagram used to classify igneous rocks based on their mineral composition.

(paleontology) A diagram showing diversity of taxa through time by the thickness of lines, often as part of a cladogram.

Synonym of Ramachandran plot

(physics) A type of unicyclic Feynman diagram in which a quark temporarily changes flavor and engages in an interaction.

A diagram showing the states of a system and their interactions

A flow diagram in which the width of the arrows is proportional to the flow rate.

A type of Cartesian graph where each axis represents a different variable, and opposite directions along an axis represent different quantities rather than positive or negative signs of the same quantity; thus four variables are diagrammed in total.

(geology, geochronology) Any of several types of diagram, used in connection with uranium–lead dating, in which each axis encodes differently sourced information about the radiometric age of the mineral being dated.

Synonym of free body diagram

(mathematics) A graph with some edges drawn as double or triple lines, arising in the classification of semisimple Lie algebras over algebraically closed fields, in the classification of Weyl groups and other finite reflection groups, and in other contexts.