| 释义 |
alidadeenUK
al·i·dade A0199600 (ăl′ĭ-dād′) also al·i·dad (-dăd′)n.1. An indicator or a sighting apparatus on a plane table, used in angular measurement.2. A topographic surveying and mapping instrument used for determining directions, consisting of a telescope and attached parts.
[French, from Medieval Latin alidada, sighting rod, from Arabic al-'iḍāda, the revolving radius of a circle : al-, the + 'iḍāda, revolving radius (alternate form of 'aḍud, humerus, from 'aḍada, to lop, cut (trees); see ʕṣ́d in Semitic roots).]alidade (ˈælɪˌdeɪd) or alidadn1. (Surveying) a surveying instrument used in plane-tabling for drawing lines of sight on a distant object and taking angular measurements2. (Surveying) the upper rotatable part of a theodolite, including the telescope and its attachments[C15: from French, from Medieval Latin allidada, from Arabic al-'idāda the revolving radius of a circle]al•i•dade (ˈæl ɪˌdeɪd)
n. 1. a straightedge with a telescopic sight, used on a plane table for topographic surveying. 2. the entire upper part of a theodolite or transit. [1400–50; late Middle English allydatha < Old Spanish alhidada < Medieval Latin < Arabic al-‘iḍādah the turning radius (like a clock hand) of a circle] Thesaurus| Noun | 1. |  alidade - surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachmentsalidadsurveying instrument, surveyor's instrument - an instrument used by surveyorstheodolite, transit - a surveying instrument for measuring horizontal and vertical angles, consisting of a small telescope mounted on a tripod | | 2. |  alidade - surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring anglesalidadsurveying instrument, surveyor's instrument - an instrument used by surveyors |
TranslationsalidadeenUK
Related to alidade: telescopic alidadeSynonyms for alidadenoun surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachmentsSynonymsRelated Words- surveying instrument
- surveyor's instrument
- theodolite
- transit
noun surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring anglesSynonymsRelated Words- surveying instrument
- surveyor's instrument
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