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1. a purified mixture of solid hydrocarbons from petroleum, used for embedding histological specimens and as a stiffening agent in pharmaceutical preparations.
2. alkane.
liquid paraffin see mineral oil.


1. One of the methane series of acyclic hydrocarbons.
2. Synonym(s): hard paraffin
[L. parum, little, + affinis, neighboring, akin, so called because of its slight tendency to chemical reaction]


Any of a number of saturated aliphatic (straight-chain) hydrocarbons of the methane series (methane, ethane, propane, butane, pentane, hexane, septane, octane, nonane, decane, etc.), in which the carbons are joined to other carbons by single bonds.

hard par·af·fin

(hahrd pară-fin)
Purified mixture of solid hydrocarbons derived from petroleum.
Synonym(s): paraffin (2) .
References in periodicals archive ?
"Improving Parafin Wax Yield throuhg process optimization using Taguchi's Method of Experimentation".
Se deposito en una mezcla liquida 1:1 de butanol y parafina (Parafin wax de Fluka Chemika[R]) y se mantuvo en estufa a 60 [grados]C durante 24 horas; transcurrido este tiempo se sustituyo por parafina pura, manteniendolo durante 24 horas.
Histopatolojik inceleme icin otopsi sirasinda infarkt dusunulen alandan, cevre miyokarddan ve koroner arterlerden alinan ve %10 formalin ile fikse edilen doku ornekleri doku takibine sokuldu, parafin bloklara gomulen dokulardan alinan 4 mikron kalinligindaki kesitler Hematoksilen-eosin boyasi ile boyanarak isik mikroskobunda incelendi.
Then the embryos were placed into plastic straws capped with parafin. Those straws were then placed in a -20[degrees]C freezer until thaw.
I WOULD like to find any ex-Lucas Victor Works, Broadgreen, Parafin Test House guys who worked there between 1952-1957.
14 floors up, eh never stood a snowball's chance in hellA police dog dies in FilthThe dugs kicked as Doyle poured parafin ower them.
Without sacrificing performance, the soybean oil can be substituted for parafin in ski wax.
(22) New slides created from organs retained in a parafin block are called "recuts."
Chestnut, although high in tannin (a by-product of the wood which in proper amounts improves the taste and allows a red wine to age by gobbling up oxygen which would otherwise spoil the wine) is too porous and must be coated with parafin to prevent excessive wine loss through evaporation.
As the exact point of bleeding could not be determined, an anterior nasal tamponade using a parafin gauze dressing was performed, following which all bleeding ceased.
Another method is to fill the casting cavity with pressurized parafin, which can penetrate into the smallest crevices or porous metal occlusions.