-logy

Usage

• tautology

  When you employ a tautology, you needlessly and often unintentionally repeat a similar sense of one word when using other words to describe it, such as in the redundant phrases "free gift" or "usual custom."

• epistemology

  Epistemology is the philosophical study of knowledge, including its limits, source, and nature.

• eschatology

  Eschatology is the philosophical study of what happens after death; it can also pertain to religious doctrines concerning death and its aftermath.

• ontology

  Ontology is a branch of philosophy that discusses such concepts as the very nature of reality, being, essence, and the ultimate entity that gives rise to existence.

• biology

  Biology is the scientific study of living things, such as plants and animals.

• technology

  Technology is the use of knowledge in science to make useful things, such as computers and smartphones.

• anthropology

  the social science that studies the origins and social relationships of human beings

• archaeology

  the branch of anthropology that studies prehistoric people and their cultures

• dermatology

  the branch of medicine dealing with the skin and its diseases

• ecology

  the environment as it relates to living organisms

• entomology

  the branch of zoology that studies insects

• etymology

  a history of a word

• geology

  a science that deals with the history of the earth as recorded in rocks

• meteorology

  predicting what the weather will be

• ophthalmology

  the branch of medicine concerned with the eye and its diseases

• paleontology

  the earth science that studies fossil organisms and related remains

• philology

  the humanistic study of language and literature

• psychology

  the science of mental life

• sociology

  the study and classification of human societies

• terminology

  a system of words used to name things in a particular discipline

• theology

  the rational and systematic study of religion and its influences and of the nature of religious truth

• trilogy

  a set of three literary or dramatic works related in subject or theme