A temporary visa issued to a person already in a country, while other more permanent arrangements are being made or decided by the immigration officials.

An early phonetic alphabet, devised by Alexander Melville Bell in 1867.

(physiology) A vision system in which two eyes work together to produce a unified field of view which is wider and stereoscopic, and in which objects can be more readily discerned.

A temporary condition resulting from focusing the eyes on a computer display for extended periods of time. Symptoms include headaches, blurry vision, and difficulty in refocusing.

plural of visitor pattern

(software, design) A behavioural design pattern that separates an algorithm from an object structure on which it operates.

A driver ant.

plural of visitor design pattern

(software, design) Synonym of visitor pattern

A simplified method of issuing visa (a permit to enter and leave a country) on arrival, as an alternative to a complete visa-free entry.