Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
alidade is a noun meaning "surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments". It carries 2 recorded senses.
surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments
surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for alidade come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.