The study of the form and structure of animals and plants.
The study of the internal structure of morphemes (words and their semantic building blocks).
The form and structure of something.
Mathematical morphology.
The study of the structure of rocks and landforms.
A description of the form and structure of something.
A subdivision of a species in other scientific disciplines.
A taxon at that rank, often indicated with trinomial nomenclature (such as Felis silvestris silvestris in zoology and Pinus nigra subsp. salzmannii in botany).
A rank in the classification of organisms, below species.