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isopleth

isopleth

9.9
A line on a map that connects places with the same value, like temperature
  • noun
  • /ˈaɪsəˌplɛθ/
  • Specialized
translation icon : isopleta
  • Figure 1 also shows isopleths, indicating areas of the same exposure concentrations.
  • yield-per-recruit isopleth

Examples

  • The scientist used an isopleth to illustrate areas with the same levels of rainfall on the map.

  • The value of the corresponding isopleth determines the boundary of the core area 43.

    Academic text (2018)
  • GRAPH: Figure 5. Yield-per-recruit isopleth diagram for Atlantic menhaden using average growth and fishing mortality values by quarter for the 1981 fishing year.

    Academic text (1991)
  • GRAPH: Figure 10 -- Yield-per-recruit isopleth diagram for Gulf menhaden using average conditions of growth and fishing mortality for the period 1978-85.

    Academic text (1991)
  • A yield-per-recruit isopleth shows gains and losses of yield-per-recruit as a function of fishing mortality rate or age-at-entry to the fishery (Fig. 10).

    Academic text (1991)
  • In the geography class, we learned how to draw an isopleth to connect points of equal temperature.

  • The weather report included an isopleth showing temperatures across different regions.

Synonyms

isobar
vsisopleth
  • Specialized
1 7.9

A line on a weather map that connects places with the same air pressure

is the broader equal-value line form, not specific to pressure
isoline
vsisopleth
  • Specialized
8.0

A line on a map that joins places with the same height or temperature

is the specific named line that also links equal values for any variable
isogram
vsisopleth
  • Specialized
9.9

A line on a map that connects points with the same value, like temperature

is the broader map line that joins equal values across variables
isarithm
vsisopleth
  • Specialized
9.9

A line on a map joining places that have the same temperature or height

is the general mapping line type that covers such equal-value joins
isometric line
vsisopleth
  • Specialized
7.2

A line on a map connecting points that have the same value, like temperature or pressure

is the general map line that serves the same equal-value purpose
isodose
vsisopleth
  • Specialized
9.9

A line or area on a diagram that shows places with the same radiation level

is the general equal-value line, not limited to radiation measurements
isotherm
vsisopleth
  • Specialized
9.5

A line on a map joining places with the same temperature at the same time

is broader, covering equal values for temperature or many other variables
isogeotherm
vsisopleth
  • Specialized
9.9

A line connecting points below the ground that have the same temperature

is more general and applies to surface or subsurface equal-value lines
isothere
vsisopleth
  • Specialized
9.9

A line on a map that connects places with the same average summer temperature

is the general equal-value line rather than this seasonal temperature line
isocheim
vsisopleth
  • Specialized
9.9

A line on a map connecting places with the same average winter temperature

is a general equal-value line not restricted to winter averages
isocryme
vsisopleth
  • Specialized
9.9

A line on a map connecting places with the same average temperature in the coldest month

is the general mapping line type covering many such specific measures
isochalaz
vsisopleth
  • Specialized
9.9

A line on a map joining places that have the same number of hailstorms

is the general equal-value line not limited to storm frequency
isohel
vsisopleth
  • Specialized
9.9

A line on a map that shows places with the same amount of sunshine

is broader, applying to equal values of many environmental measures
isobath
vsisopleth
  • Specialized
9.9

A line on a map that joins points at the same water depth

is the general equal-value line type, not confined to depth measurements
isobase
vsisopleth
  • Specialized
9.9

A line on a map that connects places that have risen by the same amount

is the general equal-value line used for many physical measures
isopieze
vsisopleth
  • Specialized
9.9

A line on a map joining places with the same underground water pressure

is the broader equal-value line family, not focused only on groundwater
isopiestic line
vsisopleth
  • Specialized
9.9

A line on a map joining places with the same water pressure underground

is the general mapping line for equal values across different fields
isoseismal
vsisopleth
  • Specialized
9.9

A line on a map joining places that felt the same earthquake shaking

is the general equal-value line, here applied to shaking intensity
isodynamic line
vsisopleth
  • Specialized
9.9

A line on a map joining places with the same magnetic strength

is the general equal-value line type, not limited to magnetic measures
isogone
vsisopleth
  • Specialized
9.9

A line on a map showing places where compasses point the same amount away from north

is broader, covering equal-value lines for many geophysical quantities
isogonal line
vsisopleth
  • Specialized
9.9

A line on the Earth's surface joining places where compasses point the same amount from true north

is the general term for lines joining equal values, not only declination
isoclinic line
vsisopleth
  • Specialized
9.9

A line on a map showing places where compass needles tilt the same way

is the general equal-value line concept beyond magnetic inclination alone
isoclinal
vsisopleth
  • Specialized
9.9

A line on a map connecting places with the same angle of the Earth's magnetic field

is the general mapping line that applies to many equal readings
isotach
vsisopleth
  • Specialized
9.9

Line on a weather map that joins places with the same wind speed

is the general equal-value line type beyond wind speed alone
isochron
vsisopleth
  • Specialized
9.9

A line on a map that shows places where rocks formed at the same time

is the general equal-value line, not confined to time or age
isochrone
vsisopleth
  • Specialized
9.9

A line on a map that connects places where an event happens at the same time

is the broader equal-value line concept beyond simultaneous events
isophone
vsisopleth
  • Specialized
9.9

A line on a map that shows where people pronounce sounds differently

is the general equal-value line concept applied to language features
isophote
vsisopleth
  • Specialized
9.9

A line on a picture that joins points of the same brightness

is the general mapping line type, used here for brightness levels
isobront
vsisopleth
  • Specialized
9.9

A line on a map connecting places where thunder and lightning happened at the same time

is the general equal-value line concept, here for storm timing
isophene
vsisopleth
  • Specialized
9.9

A line on a map that connects places where plants flower at the same time

is the broader equal-value line type, not restricted to biology

Surface Forms

isopleth singular
isopleths plural

Morphology

isopleth = iso + pleth

Formed from Greek combining forms (iso- 'equal' + -pleth/-plēthos 'quantity'); these are technical combining forms and 'pleth' is not a standalone English word, so an average B1 learner cannot derive the meaning from the parts.

Etymology

The word isopleth comes from the Greek parts iso- meaning 'equal' and -pleth meaning 'amount' or 'value'. So an isopleth is a line on a map that joins places with the same measurement, like an isotherm for temperature or an isobar for pressure.