isochore

English

Etymology

From iso- +‎ (deprecated template usage) [etyl] Ancient Greek χώρα (khṓra, “place”).

Noun

isochore (plural isochores)

1. (physics) A line drawn on a pressure / volume / temperature graph through all points having the same value of the volume.
   • 1916, William Cudmore McCullagh Lewis, A System of physical chemistry, volume 1, page 92:

     An isochore is a curve on a PVT diagram, the pressure and temperature being variable, the volume invariable.

   • 1956, Enrico Fermi, Thermodynamics, page 7:

     Thus, an isochore transformation in this case is a transformation at constant volume.

   • 1992, J M Yeomans, Statistical Mechanics of Phase Transitions, page 2:

     1.3 shows the specific heat of argon measured along the critical isochore.

2. (geology) A contour showing points of equal vertical thickness of strata; equal to an isopach if strata are horizontal.
   • 1964, Mineral Development in Assam: Symposium Volume, Assam (India) Directorate of Geology and Mining, page 205:

     The isochore plan of the overburden thus obtained is then placed over the isochore plan of the seam.

   • 1981, Coalfields of India, Geological Survey of India, page 125:

     Isochore maps of the sandstone bodies also indicate the presence of a number of channels flowing from the basin margin towards a central depression.

3. (genetics) A sequence of DNA that has a reasonably constant proportion of pairs of guanine and cytosine bases, and is rich in genes.
   • 1998, Lindsey R Lindsey, Alan R Lindsey, Transgenic Plant Research, page 268:

     A model that accounts for the differential recognition of transgenes integrated at different chromosomal locations, is the isochore hypothesis.

   • 1999, Solomon Pavlovich Vasser, Eviatar Nevo, “Scheme of the isochore organization of the human genome”, in Evolutionary Theory and Processes: Papers in Honour of Eviatar Nevo, page 117:

Coordinate terms

• contour line
• isobar
• isodrosotherm
• isogloss
• isogon
• isohyet
• isopleth
• isoquant
• isotach
• isotherm

 

Translations

physics

• (deprecated template usage) {{trans-mid}}
• Hungarian: izochor

geology

• (deprecated template usage) {{trans-mid}}

genetics

• (deprecated template usage) {{trans-mid}}

The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.

Translations to be checked

• Greek: ^{(please verify)} ισόχωρος m (isóchoros)
• Irish: ^{(please verify)} iseacór m
• (deprecated template usage) {{trans-mid}}
• Italian: ^{(please verify)} isocora (it) f

Anagrams

• choosier