Definify.com
Webster 1913 Edition
Alidade
Al′i-dade
,Noun.
[LL.
alidada
, alhidada
, fr. Ar. al-’idāda
a sort of rule: cf. F. alidade
.] The portion of a graduated instrument, as a quadrant or astrolabe, carrying the sights or telescope, and showing the degrees cut off on the arc of the instrument
Whewell.
Definition 2024
alidade
alidade
English
Alternative forms
Noun
alidade (plural alidades)
- (cartography, astronomy, surveying) A sighting device used for measuring angles.
Synonyms
- turning board, diopter (obsolete)
Translations
measuring apparatus
Portuguese
Alternative forms
Noun
alidade f (plural alidades)
- (cartography, astronomy, surveying) alidade (sighting device used for measuring angles)