line of sight

English

Noun

line of sight (plural lines of sight)

1. A straight line along which an observer has a clear view.
2. (weaponry) The line which passes through the front and rear sight, at any elevation, when they are sighted at an object.

Synonyms

• sightline

Derived terms

• VLOS

Translations

A straight line along which an observer has a clear view

• Chinese:

  Mandarin: 視線 (zh), 视线 (zh) (shìxiàn)

• Finnish: näkölinja (fi)
• French: ligne de mire (fr) f
• German: Sichtlinie (de) f (but this is only idiomatic in technical language and no equivalent is idiomatic in the colloquial), Sichtverbindung f (for this term an occasional or possible connection may suffice), Sichtweite (de) f, Blickweite f (this tendentially presupposes broadness rather than a line, i.e. field of vision)
• Italian: linea di mira
• Japanese: 視線 (ja) (しせん, shisen), 目線 (ja) (mesen)
• Polish: linia wzroku f
• Portuguese: campo de visão m
• Romanian: linie de vedere f, câmp de vedere n, linie vizuală (ro) f
• Russian: луч обзо́ра m (luč obzóra), ли́ния обзо́ра f (línija obzóra), ли́ния визи́рования f (línija vizírovanija)
• Swedish: siktlinje c, syftningslinje c, syftlinje c

See also

• visual field
• field of vision
• field of view

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for line of sight under line in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913)