Humanities

• In law: the basis of legal argumentation in United States constitutional law
• In theology: Modality (theology)
  Modality (theology)
  Modality in Protestant and Catholic Christian theology, is the structure and organization of the local or universal church. In Catholic theology, the modality is the universal Catholic church. In Protestant theology, the modality is variously described as either the universal church or the local...
  
  : the organization and structure of the church, as distinct from sodality or parachurch organizations
• In music, the subject concerning certain diatonic scales known as musical mode
  Musical mode
  In the theory of Western music since the ninth century, mode generally refers to a type of scale. This usage, still the most common in recent years, reflects a tradition dating to the middle ages, itself inspired by the theory of ancient Greek music.The word encompasses several additional...
  
  s (e.g., Ionian)
• In sociology, Modalities (sociology)
  Modalities (sociology)
  Modalities are fundamental to understanding the concept behind Structuration. According to Anthony Giddens, modalities explain the properties of the Structure. The structure is said to have both structural and individual qualities. Giddens refers to these structural modalities as 'rules' and...
  
   is a concept in Anthony Giddens structuration theory

Linguistics

• Modality (semiotics)
  Modality (semiotics)
  In semiotics, a modality is a particular way in which the information is to be encoded for presentation to humans, i.e. to the type of sign and to the status of reality ascribed to or claimed by a sign, text or genre. It is more closely associated with the semiotics of Charles Peirce than Saussure...
  
  , the channel by which signs are transmitted (oral, gesture, written)
• Linguistic modality
  Linguistic modality
  In linguistics, modality is what allows speakers to evaluate a proposition relative to a set of other propositions.In standard formal approaches to modality, an utterance expressing modality can always roughly be paraphrased to fit the following template:...
  
  , covering expressions of how the world might be and should be. This includes expressions of necessity, permissibility and probability, and negations of these

Medicine

• Sensory modality or Stimulus modality, a type of physical phenomenon that one can sense, such as temperature and sound
• In psychotherapy
  Psychotherapy
  Psychotherapy is a general term referring to any form of therapeutic interaction or treatment contracted between a trained professional and a client or patient; family, couple or group...
  
  , a method of therapeutic approach
• In medical imaging
  Medical imaging
  Medical imaging is the technique and process used to create images of the human body for clinical purposes or medical science...
  
  , any of the various types of equipment or probes used to acquire images of the body, such as radiography, ultrasound and magnetic resonance imaging

Science and technology

• Transportation modality, a mode of transport
• modal logic
  Modal logic
  Modal logic is a type of formal logic that extends classical propositional and predicate logic to include operators expressing modality. Modals — words that express modalities — qualify a statement. For example, the statement "John is happy" might be qualified by saying that John is...
  
  , a form of logic which distinguishes between (logically) "necessary truths" and "contingent truths". Related topics include possibility, impossibility, actuality, and related predicates
• modality (human-computer interaction)
  Modality (human-computer interaction)
  In human–computer interaction, a modality is the general class of:* a sense through which the human can receive the output of the computer * a sensor or device through which the computer can receive the input from the human...
  
  , a path of communication between the human and the computer, such as vision or touch

Other uses

• In advance fee fraud
  Advance fee fraud
  An advance-fee fraud is a confidence trick in which the target is persuaded to advance sums of money in the hope of realizing a significantly larger gain...
  
   (Nigerian 419 Scams), the method of funds transfers. Often used as a key-word in scam baiting
• Modal realism
  Modal realism
  Modal realism is the view, notably propounded by David Kellogg Lewis, that all possible worlds are as real as the actual world. It is based on the following tenets: possible worlds exist; possible worlds are not different in kind from the actual world; possible worlds are irreducible entities; the...
  
  , a view that all possible worlds are as real as the actual world
• Modalities (trade negotiations)
  Modalities (trade negotiations)
  Modalities are the formulas, targets, or specific measures used to accomplish objectives in trade negotiations. An example of modalities in the current World Trade Organization agriculture negotiations would be a percentage phase-out over a specified time period of agricultural export subsidies...
  
  , the formulas, targets, or specific measures used to accomplish objectives in trade negotiations