biological science, biology - the science that studies living organisms

anatomy, general anatomy - the branch of morphology that deals with the structure of animals

grammar - studies of the formation of basic linguistic units

accidence, inflectional morphology - the part of grammar that deals with the inflections of words

derivational morphology - the part of grammar that deals with the derivations of words

compound morphology - the part of grammar that deals with combinations of simple words into compound words

structure - the complex composition of knowledge as elements and their combinations; "his lectures have no structure"

affixation - the result of adding an affix to a root word

geophysical science, geophysics - geology that uses physical principles to study properties of the earth

plate tectonic theory, plate tectonics, tectonics - the branch of geology studying the folding and faulting of the earth's crust

petrology - the branch of geology that studies rocks: their origin and formation and composition