Opacity

The measure of how easily light passes through a material. It is a quantitative characteristic that can be represented as a number within the range of [0, 1], and in some cases [0%,100%], with lower numbers indicating higher transparency.

More terms you might want to know

Asymmetry

The degree of difference between the two sides of an object or system.

Typesetting

The process of arranging type to make written material readable. The arrangement of type involves decisions about individual letters and words (e.g. line spacing, letter spacing, and word spacing) and more significant page layout decisions (e.g., margins, headline position on the page).

Soft Return

Also called a line break, when you want to keep the text in one paragraph and not follow it with an airy space.

Debossing

A design or decoration impressed into the surface of a material.

Lean UX

A philosophy that companies should take a user-centred approach to design, making sure they focus on the customer's needs and not on their company's needs. UX designers need to figure out what users want before building something and not after. They must also ask themselves if including "features" will provide any value to the product or service.

HTML

A language used to create web pages, and it stands for Hypertext Markup Language.

Backslanted

A type of design that features the strokes running predominantly from the upper left to the lower right.

It can also be used in reference to a type of lettering, typically for advertisements, to be read in either direction. It is also used to help the reader navigate through and around the advertisement.

Stem

The part of a letter, usually a vertical line, that rise above the x-height.

Fitts' Law

A prediction model used in human-computer interaction. It states that the time required to move to a target area rapidly increases as the distance to the target increases. The law was proposed by Paul Fitts, an American psychologist, in 1954 as a mathematical model of movement with limited cognitive capacity.

Fitts hypothesized that one would quickly select its first apparent target when reaching for an object before considering alternatives — a phenomenon called "target fixation." This tendency would increase progressively with increased distance between the subject and object until it eventually became exponential (i.e., too far away).

Empathy

A type of understanding that is achieved by taking the perspective of another individual. Different people's perspectives often have different needs and values, so empathy can help you understand those differences.

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