lunar day

lunar day
in describing tides, the time of rotation of the Earth with respect to the moon, or the interval between two successive upper transits of the moon over the meridian of a place. The mean lunar day is approximately 24.84 solar hours in length. Also called tidal day

Dictionary of ichthyology. 2009.

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  • lunar day — Day Day (d[=a]), n. [OE. day, dai, dei, AS. d[ae]g; akin to OS., D., Dan., & Sw. dag, G. tag, Icel. dagr, Goth. dags; cf. Skr. dah (for dhagh ?) to burn. [root]69. Cf. {Dawn}.] 1. The time of light, or interval between one night and the next; the …   The Collaborative International Dictionary of English

  • Lunar day — In space exploration, a lunar day is the period of time it takes for the Moon to complete one full rotation on its axis with respect to the Sun . Equivalently, it is the time it takes the Moon to make one complete orbit around the Earth and come… …   Wikipedia

  • lunar day — noun the period of time taken for the moon to make one full rotation on its axis (about 27.3 sidereal days) • Hypernyms: ↑day * * * ˌlunar ˈday 7 [lunar day] noun (astronomy) the ti …   Useful english dictionary

  • lunar day —    another name for the tidal day, a unit of time equal to 24 hours 50 minutes used in tidal predictions …   Dictionary of units of measurement

  • lunar day — a division of time that is equal to the elapsed time between two consecutive returns of the same terrestrial meridian to the moon. [1680 90] * * * …   Universalium

  • lunar day — noun the interval between two successive crossings of the meridian by the moon (roughly 24 hours and 50 minutes) …   English new terms dictionary

  • Day — (d[=a]), n. [OE. day, dai, dei, AS. d[ae]g; akin to OS., D., Dan., & Sw. dag, G. tag, Icel. dagr, Goth. dags; cf. Skr. dah (for dhagh ?) to burn. [root]69. Cf. {Dawn}.] 1. The time of light, or interval between one night and the next; the time… …   The Collaborative International Dictionary of English

  • Day after day — Day Day (d[=a]), n. [OE. day, dai, dei, AS. d[ae]g; akin to OS., D., Dan., & Sw. dag, G. tag, Icel. dagr, Goth. dags; cf. Skr. dah (for dhagh ?) to burn. [root]69. Cf. {Dawn}.] 1. The time of light, or interval between one night and the next; the …   The Collaborative International Dictionary of English

  • Day blindness — Day Day (d[=a]), n. [OE. day, dai, dei, AS. d[ae]g; akin to OS., D., Dan., & Sw. dag, G. tag, Icel. dagr, Goth. dags; cf. Skr. dah (for dhagh ?) to burn. [root]69. Cf. {Dawn}.] 1. The time of light, or interval between one night and the next; the …   The Collaborative International Dictionary of English

  • Day by day — Day Day (d[=a]), n. [OE. day, dai, dei, AS. d[ae]g; akin to OS., D., Dan., & Sw. dag, G. tag, Icel. dagr, Goth. dags; cf. Skr. dah (for dhagh ?) to burn. [root]69. Cf. {Dawn}.] 1. The time of light, or interval between one night and the next; the …   The Collaborative International Dictionary of English

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