placer

[ plas-er ]

/ ˈplæs ər /

SEE SYNONYMS FOR placer ON THESAURUS.COM

noun Mining.

a surficial mineral deposit formed by the concentration of small particles of heavy minerals, as gold, rutile, or platinum, in gravel or small sands.

the site of a form of mining (placer mining ) in which a placer deposit is washed to separate the gold or other valuable minerals.

Origin of placer

1835–45, Americanism;<American Spanish; Spanish: sandbank <Catalan placel, derivative of plaza open place; see plaza

Words nearby placer

placentoma, place of arms, place of articulation, place of safety order, Place Pigalle, placer, Placerville, place setting, placet, place value, placid

Definition for placer (2 of 2)

placer²

[ pley-ser ]

/ ˈpleɪ sər /

noun

a person who sets things in their place or arranges them.

a person or animal that is among the winners of a race or other contest.

Origin of placer

First recorded in 1570–80; place + -er¹

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for placer

Here at Holkham Bay in 1876 began the first placer gold-mining in Alaska.
America, Volume 6 (of 6)|Joel Cook
In Placer county stone platters and dishes have been found in auriferous gravels from 10 to 20 feet below the surface.
Human Origins|Samuel Laing
My principal purpose, however, was to visit the newly-discovered gold "placer," in the Valley of the Sacramento.
The Exploring Expedition to the Rocky Mountains, Oregon and California|Brevet Col. J.C. Fremont
"Placer, they've come back to the groundcars and turned them in this direction," said Vidonati.
Rebels of the Red Planet|Charles Louis Fontenay

For the placer mines, see our volume xix, p. 304, note 128 (Gregg).
Early Western Travels 1748-1846, Volume XX|Various

British Dictionary definitions for placer

placer

/ (ˈplæsə) /

noun

surface sediment containing particles of gold or some other valuable mineral
(in combination)placer-mining

Word Origin for placer

C19: from American Spanish: deposit, from Spanish plaza place

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for placer

placer

[ plăs′ər ]

A surface deposit of minerals, such as gold or magnetite, laid down by a river. The minerals are usually concentrated in one area because they are relatively heavy and therefore settle out of the river's currents more quickly than lighter sediments such as silt and sand.♦ The extraction of minerals from placers, as by panning, washing, or dredging, is called placer mining.

单词	placer
释义	placer ¹ [ plas-er ] / ˈplæs ər / SEE SYNONYMS FOR placer ON THESAURUS.COM noun Mining. a surficial mineral deposit formed by the concentration of small particles of heavy minerals, as gold, rutile, or platinum, in gravel or small sands. the site of a form of mining (placer mining ) in which a placer deposit is washed to separate the gold or other valuable minerals. Origin of placer ¹ 1835–45, Americanism;<American Spanish; Spanish: sandbank <Catalan placel, derivative of plaza open place; see plaza Words nearby placer placentoma, place of arms, place of articulation, place of safety order, Place Pigalle, placer, Placerville, place setting, placet, place value, placid Definition for placer (2 of 2) placer² [ pley-ser ] / ˈpleɪ sər / noun a person who sets things in their place or arranges them. a person or animal that is among the winners of a race or other contest. Origin of placer ² First recorded in 1570–80; place + -er¹ Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for placer Here at Holkham Bay in 1876 began the first placer gold-mining in Alaska. America, Volume 6 (of 6)\|Joel Cook In Placer county stone platters and dishes have been found in auriferous gravels from 10 to 20 feet below the surface. Human Origins\|Samuel Laing My principal purpose, however, was to visit the newly-discovered gold "placer," in the Valley of the Sacramento. The Exploring Expedition to the Rocky Mountains, Oregon and California\|Brevet Col. J.C. Fremont "Placer, they've come back to the groundcars and turned them in this direction," said Vidonati. Rebels of the Red Planet\|Charles Louis Fontenay For the placer mines, see our volume xix, p. 304, note 128 (Gregg). Early Western Travels 1748-1846, Volume XX\|Various British Dictionary definitions for placer placer / (ˈplæsə) / noun surface sediment containing particles of gold or some other valuable mineral (in combination)placer-mining Word Origin for placer C19: from American Spanish: deposit, from Spanish plaza place Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to placer double, runner-up, supporting, lower, extra, twin, duplicate, place, inferior, reproduction, following, further, alternative, repeated, secondary, succeeding, proponent, exponent, helper, assistant Scientific definitions for placer placer [ plăs′ər ] A surface deposit of minerals, such as gold or magnetite, laid down by a river. The minerals are usually concentrated in one area because they are relatively heavy and therefore settle out of the river's currents more quickly than lighter sediments such as silt and sand.♦ The extraction of minerals from placers, as by panning, washing, or dredging, is called placer mining. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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placer

noun Mining.

Origin of placer

Words nearby placer

Definition for placer (2 of 2)

noun

Origin of placer

Example sentences from the Web for placer

British Dictionary definitions for placer

noun

Word Origin for placer

Words related to placer

Scientific definitions for placer