资料来源 : pyDict

潮汐波,浪潮

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Tidal \Tid"al\, a.
   Of or pertaining to tides; caused by tides; having tides;
   periodically rising and falling, or following and ebbing; as,
   tidal waters.

         The tidal wave of deeper souls Into our inmost being
         rolls, And lifts us unawares Out of all meaner cares.
                                                  --Longfellow.

   {Tidal air} (Physiol.), the air which passes in and out of
      the lungs in ordinary breathing. It varies from twenty to
      thirty cubic inches.

   {Tidal basin}, a dock that is filled at the rising of the
      tide.

   {Tidal wave}.
   (a) See {Tide wave}, under {Tide}. Cf. 4th {Bore}.
   (b) A vast, swift wave caused by an earthquake or some
       extraordinary combination of natural causes. It rises far
       above high-water mark and is often very destructive upon
       low-lying coasts.

Tide \Tide\, n. [AS. t[=i]d time; akin to OS. & OFries. t[=i]d,
   D. tijd, G. zeit, OHG. z[=i]t, Icel. t[=i]?, Sw. & Dan. tid,
   and probably to Skr. aditi unlimited, endless, where a- is a
   negative prefix. [root]58. Cf. {Tidings}, {Tidy}, {Till},
   prep., {Time}.]
   1. Time; period; season. [Obsoles.] ``This lusty summer's
      tide.'' --Chaucer.

            And rest their weary limbs a tide.    --Spenser.

            Which, at the appointed tide, Each one did make his
            bride.                                --Spenser.

            At the tide of Christ his birth.      --Fuller.

   2. The alternate rising and falling of the waters of the
      ocean, and of bays, rivers, etc., connected therewith. The
      tide ebbs and flows twice in each lunar day, or the space
      of a little more than twenty-four hours. It is occasioned
      by the attraction of the sun and moon (the influence of
      the latter being three times that of the former), acting
      unequally on the waters in different parts of the earth,
      thus disturbing their equilibrium. A high tide upon one
      side of the earth is accompanied by a high tide upon the
      opposite side. Hence, when the sun and moon are in
      conjunction or opposition, as at new moon and full moon,
      their action is such as to produce a greater than the
      usual tide, called the {spring tide}, as represented in
      the cut. When the moon is in the first or third quarter,
      the sun's attraction in part counteracts the effect of the
      moon's attraction, thus producing under the moon a smaller
      tide than usual, called the {neap tide}.

   Note: The flow or rising of the water is called flood tide,
         and the reflux, ebb tide.

   3. A stream; current; flood; as, a tide of blood. ``Let in
      the tide of knaves once more; my cook and I'll provide.''
      --Shak.

   4. Tendency or direction of causes, influences, or events;
      course; current.

            There is a tide in the affairs of men, Which, taken
            at the flood, leads on to fortune.    --Shak.

   5. Violent confluence. [Obs.] --Bacon.

   6. (Mining) The period of twelve hours.

   {Atmospheric tides}, tidal movements of the atmosphere
      similar to those of the ocean, and produced in the same
      manner by the attractive forces of the sun and moon.

   {Inferior tide}. See under {Inferior}, a.

   {To work double tides}. See under {Work}, v. t.

   {Tide day}, the interval between the occurrences of two
      consecutive maxima of the resultant wave at the same
      place. Its length varies as the components of sun and moon
      waves approach to, or recede from, one another. A
      retardation from this cause is called the lagging of the
      tide, while the acceleration of the recurrence of high
      water is termed the priming of the tide. See {Lag of the
      tide}, under 2d {Lag}.

   {Tide dial}, a dial to exhibit the state of the tides at any
      time.

   {Tide gate}.
      (a) An opening through which water may flow freely when
          the tide sets in one direction, but which closes
          automatically and prevents the water from flowing in
          the other direction.
      (b) (Naut.) A place where the tide runs with great
          velocity, as through a gate.

   {Tide gauge}, a gauge for showing the height of the tide;
      especially, a contrivance for registering the state of the
      tide continuously at every instant of time. --Brande & C.

   {Tide lock}, a lock situated between an inclosed basin, or a
      canal, and the tide water of a harbor or river, when they
      are on different levels, so that craft can pass either way
      at all times of the tide; -- called also {guard lock}.

   {Tide mill}. (a) A mill operated by the tidal currents.
      (b) A mill for clearing lands from tide water.

   {Tide rip}, a body of water made rough by the conflict of
      opposing tides or currents.

   {Tide table}, a table giving the time of the rise and fall of
      the tide at any place.

   {Tide water}, water affected by the flow of the tide; hence,
      broadly, the seaboard.

   {Tide wave}, or {Tidal wave}, the swell of water as the tide
      moves. That of the ocean is called primitive; that of bays
      or channels derivative. --Whewell.

   {Tide wheel}, a water wheel so constructed as to be moved by
      the ebb or flow of the tide.

资料来源 : WordNet®

tidal wave
     n : a huge destructive wave (especially one caused by an
         earthquake) [syn: {tsunami}]