pptn.

Forms: 1800s– ppt., 1800s– ppt (without point).

Origin: Formed within English, by clipping or shortening. Etymon: precipitate n.

Etymology: Shortened < precipitate n. (as a graphic abbreviation).

= precipitate n. 2a.

ΘΚΠ

the world > matter > constitution of matter > density or solidity > state of being solid rather than fluid > [noun] > solid matter which falls to bottom of liquid

drega1300

groundsa1340

upon the lee1390

foundersc1450

residence1539

sediment1547

resident1558

precipitate1594

settling1594

precipitation1605

crassament1615

subsistence1622

subsidence1646

sedimen1655

crassamentum1657

deposit1781

sludge1839

ppt1864

1864 F. H. Storer First Outl. Dict. Solubilities Chem. Substances p.xi/2 Abbreviations Ppt. = Precipitate.

1866 W. H. Spencer Elem. Qualitative Chem. Anal. 6 Hydrochloric acid fails to precipitate Lead from dilute solutions..; hence the non-formation of a ppt. upon adding hydrochloric acid does not prove the absence of this metal.

1886 Jrnl. Amer. Chem. Soc. 8 14 These results show that with HCL alone added the ppt is not pure K₂PtCl₆.

1955 J. C. Giblin Qualitative & Volumetric Anal. (ed. 2) i. 15 Add sodium hydroxide solution. White gelatinous ppt., soluble in excess NaOH, indicates Aluminium.

2004 Jrnl. Agric. & Food Chem. 52 2168/1 Acetone-precipitated protein powders were prepared by adjusting the homogenase supernatant to 8% acetone with 4°C 100% acetone (acetone ppt).

This is a new entry (OED Third Edition, March 2007; most recently modified version published online December 2020).

ppt n. parts per thousand.

ΚΠ

1946 Biol. Bull. 90 247 The salinity of the water ranged from 27.31 p.p.t. soon after high water to 25.45 p.p.t. at low water.

1997 G. S. Helfman et al. Diversity of Fishes xvii. 313/1 Some desert pupfishes can tolerate salinities over 100 parts per thousand (ppt) and as high as 140 ppt, three to four times that of seawater.

单词	ppt
释义	pptn. Forms: 1800s– ppt., 1800s– ppt (without point). Origin: Formed within English, by clipping or shortening. Etymon: precipitate n. Etymology: Shortened < precipitate n. (as a graphic abbreviation). = precipitate n. 2a. ΘΚΠ the world > matter > constitution of matter > density or solidity > state of being solid rather than fluid > [noun] > solid matter which falls to bottom of liquid drega1300 groundsa1340 upon the lee1390 foundersc1450 residence1539 sediment1547 resident1558 precipitate1594 settling1594 precipitation1605 crassament1615 subsistence1622 subsidence1646 sedimen1655 crassamentum1657 deposit1781 sludge1839 ppt1864 1864 F. H. Storer First Outl. Dict. Solubilities Chem. Substances p.xi/2 Abbreviations Ppt. = Precipitate. 1866 W. H. Spencer Elem. Qualitative Chem. Anal. 6 Hydrochloric acid fails to precipitate Lead from dilute solutions..; hence the non-formation of a ppt. upon adding hydrochloric acid does not prove the absence of this metal. 1886 Jrnl. Amer. Chem. Soc. 8 14 These results show that with HCL alone added the ppt is not pure K₂PtCl₆. 1955 J. C. Giblin Qualitative & Volumetric Anal. (ed. 2) i. 15 Add sodium hydroxide solution. White gelatinous ppt., soluble in excess NaOH, indicates Aluminium. 2004 Jrnl. Agric. & Food Chem. 52 2168/1 Acetone-precipitated protein powders were prepared by adjusting the homogenase supernatant to 8% acetone with 4°C 100% acetone (acetone ppt). This is a new entry (OED Third Edition, March 2007; most recently modified version published online December 2020). > as lemmas ppt ppt n. parts per thousand. ΚΠ 1946 Biol. Bull. 90 247 The salinity of the water ranged from 27.31 p.p.t. soon after high water to 25.45 p.p.t. at low water. 1997 G. S. Helfman et al. Diversity of Fishes xvii. 313/1 Some desert pupfishes can tolerate salinities over 100 parts per thousand (ppt) and as high as 140 ppt, three to four times that of seawater. extracted from Pn. ppt ppt n. parts per trillion (10¹²). ΚΠ 1964 Limnol. & Oceanogr. 9 310 Toxaphene ranged from 7 to 410 parts per trillion (ppt). 1993 Canad. Geographic July 14/1 Near a pulp mill at Crofton on Vancouver Island, dioxin levels in eggs from a heronry dropped from 209 ppt in 1987 to 19.4 ppt last year. extracted from Pn. < n.1864 as lemmas
随便看	θ177217 θ177218 θ177219 θ177220 θ177221 θ177222 θ177223 θ177224 θ177225 θ177226 θ177227 θ177228 θ177229 θ17723 θ177230 θ177231 θ177232 θ177233 θ177234 θ177235 θ177236 θ177237 θ177238 θ177239 θ17724

pptn.

> as lemmas