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 2025
alidade
alidade
English
A firefighting alidade
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)