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Retard
Retard Re*tard", v. i.
To stay back. [Obs.] --Sir. T. Browne.
Retard
Retard Re*tard", n.
Retardation; delay.
RetardRetard Re*tard", v. t. [imp. & p. p. Retarded; p. pr. & vb.
n. Retarding.] [L. retardare, retardatum; pref. re- re- +
tardare to make slow, to delay, fr. tardus slow: cf. F.
retarder. See Tardy.]
1. To keep delaying; to continue to hinder; to prevent from
progress; to render more slow in progress; to impede; to
hinder; as, to retard the march of an army; to retard the
motion of a ship; -- opposed to accelerate.
2. To put off; to postpone; as, to retard the attacks of old
age; to retard a rupture between nations.
Syn: To impede; hinder; obstruct; detain; delay;
procrastinate; postpone; defer. RetardationRetardation Re`tar*da"tion, n. [L. retardatio: cf. F.
retardation.]
1. The act of retarding; hindrance; the act of delaying; as,
the retardation of the motion of a ship; -- opposed to
acceleration.
The retardations of our fluent motion. --De Quinsey.
2. That which retards; an obstacle; an obstruction.
Hills, sloughs, and other terrestrial retardations.
--Sir W.
Scott.
3. (Mus.) The keeping back of an approaching consonant chord
by prolonging one or more tones of a previous chord into
the intermediate chord which follows; -- differing from
suspension by resolving upwards instead of downwards.
4. The extent to which anything is retarded; the amount of
retarding or delay.
Retardation of the tide.
(a) The lunitidal interval, or the hour angle of the moon
at the time of high tide any port; the interval
between the transit of the moon and the time of high
tide next following.
(b) The age of the tide; the retard of the tide. See under
Retard, n. Retardation of the tideRetardation Re`tar*da"tion, n. [L. retardatio: cf. F.
retardation.]
1. The act of retarding; hindrance; the act of delaying; as,
the retardation of the motion of a ship; -- opposed to
acceleration.
The retardations of our fluent motion. --De Quinsey.
2. That which retards; an obstacle; an obstruction.
Hills, sloughs, and other terrestrial retardations.
--Sir W.
Scott.
3. (Mus.) The keeping back of an approaching consonant chord
by prolonging one or more tones of a previous chord into
the intermediate chord which follows; -- differing from
suspension by resolving upwards instead of downwards.
4. The extent to which anything is retarded; the amount of
retarding or delay.
Retardation of the tide.
(a) The lunitidal interval, or the hour angle of the moon
at the time of high tide any port; the interval
between the transit of the moon and the time of high
tide next following.
(b) The age of the tide; the retard of the tide. See under
Retard, n. Retardative
Retardative Re*tard"a*tive, a. [Cf. F. retardatif.]
Tending, or serving, to retard.
RetardedRetard Re*tard", v. t. [imp. & p. p. Retarded; p. pr. & vb.
n. Retarding.] [L. retardare, retardatum; pref. re- re- +
tardare to make slow, to delay, fr. tardus slow: cf. F.
retarder. See Tardy.]
1. To keep delaying; to continue to hinder; to prevent from
progress; to render more slow in progress; to impede; to
hinder; as, to retard the march of an army; to retard the
motion of a ship; -- opposed to accelerate.
2. To put off; to postpone; as, to retard the attacks of old
age; to retard a rupture between nations.
Syn: To impede; hinder; obstruct; detain; delay;
procrastinate; postpone; defer. Retarder
Retarder Re*tard"er, n.
One who, or that which, retards.
Retarder
Retarder Re*tard"er (r[-e]*t[aum]r"d[~e]r), n.
1. (Steam Boiler) Any of various devices, as a helix of flat
metal strip, introduced into a boiler tube to increase the
heating effect of the fire.
2. (Photog.) A substance, as potassium bromide, added to a
developer to retard its action.
RetardingRetard Re*tard", v. t. [imp. & p. p. Retarded; p. pr. & vb.
n. Retarding.] [L. retardare, retardatum; pref. re- re- +
tardare to make slow, to delay, fr. tardus slow: cf. F.
retarder. See Tardy.]
1. To keep delaying; to continue to hinder; to prevent from
progress; to render more slow in progress; to impede; to
hinder; as, to retard the march of an army; to retard the
motion of a ship; -- opposed to accelerate.
2. To put off; to postpone; as, to retard the attacks of old
age; to retard a rupture between nations.
Syn: To impede; hinder; obstruct; detain; delay;
procrastinate; postpone; defer. Retardment
Retardment Re*tard"ment, n. [Cf. F. retardement.]
The act of retarding; retardation. --Cowley.
TetardTetard Te*tard", n. (Zo["o]l.)
A gobioid fish (Eleotris gyrinus) of the Southern United
States; -- called also sleeper.
Meaning of Etard from wikipedia
- The
Étard reaction is a
chemical reaction that
involves the
direct oxidation of an
aromatic or
heterocyclic bound methyl group to an
aldehyde using chromyl...
-
Alexandre Léon
Étard (1852–1910) was a
French chemist. He was born on 5
January 1852 in Alençon, and died on 1 May 1910 in Paris.
Étard was a preparer...
- derivatives. It will also
attack benzylic methyl groups to give
aldehydes via the
Étard reaction.
Dichloromethane is a
suitable solvent for
these reactions. CrO2Cl2...
-
permanganate to
yield benzoic acid and
chromyl chloride to
yield benzaldehyde (
Étard reaction). The
methyl group in
toluene undergoes deprotonation only with...
- 1002/14651858.CD006081.pub2. hdl:1893/22520. PMC 9395125. PMID 26289586.
Nathou C,
Etard O,
Dollfus S (2019). "Auditory
verbal hallucinations in schizophrenia: current...
- d947. doi:10.1136/bmj.d947. PMID 21355025. S2CID 206894472.
Baysson H,
Etard C,
Brisse HJ,
Bernier MO (January 2012). "[Diagnostic
radiation exposure...
-
During his time in
Paris he
became a
friend of the
chemist Alexandre Léon
Étard and the
botanist Vasque. His marriage, to Léonie Lugan, took
place in 1882...
- article: N. Tzourio-Mazoyer; B. Landeau; D. Papathan****iou; F. Crivello; O.
Etard; N. Delcroix;
Bernard Mazoyer & M.
Joliot (January 2002). "Automated Anatomical...
-
sulfide contraction Eschweiler–Clarke
reaction Ester pyrolysis Ether cleavage Étard reaction Evans aldol Evans–Saksena
reduction Evans–Tishchenko
reaction Favorskii...
- (3): 140–151. doi:10.1177/070674370905400302. PMID 19321018.
Nathou C,
Etard O,
Dollfus S (2019). "Auditory
verbal hallucinations in schizophrenia: current...
