An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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lag
  ۱) لک؛ ۲) لکیدن  
1) lek; 2) lekidan
Fr.: 1) retard, décalage; 2) rester en arrière traîner  

1a) A lagging or falling behind; retardation.

1b) Mechanics: The amount of retardation of some motion.

1c) Electricity: The retardation of one alternating quantity, as current, with respect to another related alternating quantity, as voltage.

  1. To fail to maintain a desired pace or to keep up; fall or stay behind (Dictionary.com).

Etymology (EN): Possibly from Scandinavian; cf. Norwegian lagga “to go slowly.”

Etymology (PE): Lek, from lek lek kardan “to walk slowly, to lag behind.”