English-Thai Dictionary
alidade
N เครื่อง เล็ง krueng-leng
Webster's 1913 Dictionary
ALIDADE
Al "i *dade, n. Etym: [LL. alidada, alhidada, fr. Ar. al-'idada a sort of rule: cf. F. alidade. ]
Defn: 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.
New American Oxford Dictionary
alidade
al i dade |ˈaliˌdād ˈælədeɪd | ▶noun a sighting device or pointer for determining directions or measuring angles, used in surveying and (formerly ) astronomy. ORIGIN late Middle English: directly or (in modern use ) via French and Spanish from Arabic al- ‘iḍāda ‘the revolving radius, ’ probably based on ‘aḍud ‘upper arm. ’
Oxford Dictionary
alidade
alidade |ˈalɪdeɪd | ▶noun a sighting device or pointer for determining directions or measuring angles, used in surveying and (formerly ) astronomy. ORIGIN late Middle English: directly or (in modern use ) via French and Spanish from Arabic al- ‘iḍāda ‘the revolving radius ’, probably based on aḍud ‘upper arm ’.
The Wordsmith Dictionary