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Acadian epochAcadian A*ca"di*an, a.
Of or pertaining to Acadie, or Nova Scotia. ``Acadian
farmers.' --Longfellow. -- n. A native of Acadie.
Acadian epoch (Geol.), an epoch at the beginning of the
American paleozoic time, and including the oldest American
rocks known to be fossiliferous. See Geology.
Acadian owl (Zo["o]l.), a small North American owl
(Nyctule Acadica); the saw-whet. Antiochian epochAntiochian An`ti*o"chi*an, a.
1. Pertaining to Antiochus, a contemporary with Cicero, and
the founder of a sect of philosophers.
2. Of or pertaining to the city of Antioch, in Syria.
Antiochian epoch (Chron.), a method of computing time, from
the proclamation of liberty granted to the city of
Antioch, about the time of the battle of Pharsalia, B.C.
48. Calciferous epochCalciferous Cal*cif"er*ous, a. [L. calx, calcis, lime +
-ferous.]
Bearing, producing, or containing calcite, or carbonate of
lime.
Calciferous epoch (Geol.), an epoch in the American lower
Silurian system, immediately succeeding the Cambrian
period. The name alludes to the peculiar mixture of
calcareous and siliceous characteristics in many of the
beds. See the Diagram under Geology. Cauda galli epochCauda galli Cau"da gal*li, . [L., tail of a cock.] (Paleon.)
A plume-shaped fossil, supposed to be a seaweed,
characteristic of the lower Devonian rocks; as, the cauda
galli grit.
Cauda galli epoch (Geol.), an epoch at the begining of the
Devonian age in eastern America, so named from the
characteristic gritty sandstone marked with impressions of
cauda galli. See the Diagram under Geology. Chazy epochChazy epoch Cha*zy" ep"och (Geol.)
An epoch at the close of the Canadian period of the American
Lower Silurian system; -- so named from a township in Clinton
Co., New York. See the Diagram under Geology. Cincinnati epoch
Cincinnati epoch Cin`cin*na"ti ep"och (Geol.)
An epoch at the close of the American lower Silurian system.
The rocks are well developed near Cincinnati, Ohio. The group
includes the Hudson River and Lorraine shales of New York.
epoch or periodGlacial Gla"cial, a. [L. glacialis, from glacies ice: cf. F.
glacial.]
1. Pertaining to ice or to its action; consisting of ice;
frozen; icy; esp., pertaining to glaciers; as, glacial
phenomena. --Lyell.
2. (Chem.) Resembling ice; having the appearance and
consistency of ice; -- said of certain solid compounds;
as, glacial phosphoric or acetic acids.
Glacial acid (Chem.), an acid of such strength or purity as
to crystallize at an ordinary temperature, in an icelike
form; as acetic or carbolic acid.
Glacial drift (Geol.), earth and rocks which have been
transported by moving ice, land ice, or icebergs; bowlder
drift.
Glacial epoch or period (Geol.), a period during which
the climate of the modern temperate regions was polar, and
ice covered large portions of the northern hemisphere to
the mountain tops.
Glacial theory or hypothesis. (Geol.) See Glacier
theory, under Glacier. EpochaEpocha Ep"o*cha, n. [L.]
See Epoch. --J. Adams. Epochal
Epochal Ep"o*chal, a.
Belonging to an epoch; of the nature of an epoch. ``Epochal
points.' --Shedd.
Epochra CanadensisCurrant Cur"rant (k?r"rant), n. [F. corinthe (raisins de
Corinthe raisins of Corinth) currant (in sense 1), from the
city of Corinth in Greece, whence, probably, the small dried
grape (1) was first imported, the Ribes fruit (2) receiving
the name from its resemblance to that grape.]
1. A small kind of seedless raisin, imported from the Levant,
chiefly from Zante and Cephalonia; -- used in cookery.
2. The acid fruit or berry of the Ribes rubrum or common
red currant, or of its variety, the white currant.
3. (Bot.) A shrub or bush of several species of the genus
Ribes (a genus also including the gooseberry); esp., the
Ribes rubrum.
Black currant,a shrub or bush (Ribes nigrum and R.
floridum) and its black, strong-flavored, tonic fruit.
Cherry currant, a variety of the red currant, having a
strong, symmetrical bush and a very large berry.
Currant borer (Zo["o]l.), the larva of an insect that bores
into the pith and kills currant bushes; specif., the
larvae of a small clearwing moth ([AE]geria
tipuliformis) and a longicorn beetle (Psenocerus
supernotatus).
Currant worm (Zo["o]l.), an insect larva which eats the
leaves or fruit of the currant. The most injurious are the
currant sawfly (Nematus ventricosus), introduced from
Europe, and the spanworm (Eufitchia ribearia). The fruit
worms are the larva of a fly (Epochra Canadensis), and a
spanworm (Eupithecia).
Flowering currant, Missouri currant, a species of Ribes
(R. aureum), having showy yellow flowers. Genesee epoch
Genesee epoch Gen`e*see" ep"och (Geol.)
The closing subdivision of the Hamilton period in the
American Devonian system; -- so called because the formations
of this period crop out in Genesee, New York.
H epochHallstatt Hall"statt, Hallstattian Hall*stat"ti*an, a.
Of or pert. to Hallstatt, Austria, or the Hallstatt
civilization.
Hallstatt, or Hallstattian, civilization, a prehistoric
civilization of central Europe, variously dated at from
1000 to 1500 b. c. and usually associated with the Celtic
or Alpine race. It was characterized by expert use of
bronze, a knowledge of iron, possession of domestic
animals, agriculture, and artistic skill and sentiment in
manufacturing pottery, ornaments, etc.
The Hallstattian civilization flourished chiefly in
Carinthia, southern Germany, Switzerland, Bohemia,
Silesia, Bosnia, the southeast of France, and
southern Italy. --J. Deniker.
H. epoch, the first iron age, represented by the Hallstatt
civilization. Julian epochJulian Jul"ian (?; 277) a. [L. Julianus, fr. Julius. Cf.
July, Gillian.]
Relating to, or derived from, Julius C[ae]sar.
Julian calendar, the calendar as adjusted by Julius
C[ae]sar, in which the year was made to consist of 365
days, each fourth year having 366 days.
Julian epoch, the epoch of the commencement of the Julian
calendar, or 46 b. c.
Julian period, a chronological period of 7,980 years,
combining the solar, lunar, and indiction cycles (28 x 19
x 15 = 7,980), being reckoned from the year 4713 B. C.,
when the first years of these several cycles would
coincide, so that if any year of the period be divided by
28, 19, or 15, the remainder will be the year of the
corresponding cycle. The Julian period was proposed by
Scaliger, to remove or avoid ambiguities in chronological
dates, and was so named because composed of Julian years.
Julian year, the year of 365 days, 6 hours, adopted in the
Julian calendar, and in use until superseded by the
Gregorian year, as established in the reformed or
Gregorian calendar. Medina epochMedina epoch Me*di"na ep"och [From Medina in New York.]
(Geol.)
A subdivision of the Niagara period in the American upper
Silurian, characterized by the formations known as the Oneida
conglomerate, and the Medina sandstone. See the Chart of
Geology. Terrace epochTerrace Ter"race, n. [F. terrasse (cf. Sp. terraza, It.
terrazza), fr. L. terra the earth, probably for tersa,
originally meaning, dry land, and akin to torrere to parch,
E. torrid, and thirst. See Thirst, and cf. Fumitory,
Inter, v., Patterre, Terrier, Trass, Tureen,
Turmeric.]
1. A raised level space, shelf, or platform of earth,
supported on one or more sides by a wall, a bank of tuft,
or the like, whether designed for use or pleasure.
2. A balcony, especially a large and uncovered one.
3. A flat roof to a house; as, the buildings of the Oriental
nations are covered with terraces.
4. A street, or a row of houses, on a bank or the side of a
hill; hence, any street, or row of houses.
5. (Geol.) A level plain, usually with a steep front,
bordering a river, a lake, or sometimes the sea.
Note: Many rivers are bordered by a series of terraces at
different levels, indicating the flood plains at
successive periods in their history.
Terrace epoch. (Geol.) See Drift epoch, under Drift, a.
Meaning of Epoch from wikipedia
- and periodization, an
epoch or
reference epoch is an
instant in time
chosen as the
origin of a
particular calendar era. The "
epoch"
serves as a reference...
- In astronomy, an
epoch or
reference epoch is a
moment in time used as a
reference point for some time-varying
astronomical quantity. It is
useful for the...
- The
Epoch Times is a far-right
international multi-language
newspaper and
media company affiliated with the
Falun Gong new
religious movement. The newspaper...
-
seconds that have
elapsed since 00:00:00 UTC on 1 January 1970, the Unix
epoch. For example, at
midnight on
January 1 2010, Unix time was 1262304000. Unix...
- In computing, an
epoch is a
fixed date and time used as a
reference from
which a
computer measures system time. Most
computer systems determine time as...
- Look up
epoch in Wiktionary, the free dictionary. An
epoch is an
instant in time
chosen as the
origin of a
particular calendar era.
Epoch or
EPOCH may also...
- In
physical cosmology, the
inflationary epoch was the
period in the
evolution of the
early universe when,
according to
inflation theory, the universe...
- Pleiocene) is the
epoch in the
geologic time
scale that
extends from 5.33 to 2.58
million years ago (Ma). It is the
second and most
recent epoch of the Neogene...
- is
often combined with rituximab. In this case it is
called R-
EPOCH or
EPOCH-R.The R-
EPOCH regimen consists of: Rituximab: an anti-CD20
monoclonal antibody...
- In
cosmological models of the Big Bang, the
lepton epoch was the
period in the
evolution of the
early universe in
which the
leptons dominated the m****...
