isotonemap
nounUK /ˈaɪsəʊtəʊn mæp/
US /ˈaɪsoʊtoʊn mæp/
A picture that shows lines where something is the same.
The weather report used an isotonemap to show areas with equal rainfall.
RELATED WORDS
OTHER MEANINGS
2. A chart connecting points that share an equal level of sound or tone.
The acoustics engineer drew an isotonemap to mark zones of equal loudness.
3. A diagram showing regions with the same concentration of a substance.
The lab's isotonemap highlighted where the chemical was evenly spread.
4. A visual tool linking places with matching pressure or tension readings.
Sailors checked the isotonemap before planning their route.