† photometrographn.

Origin: Formed within English, by compounding. Etymons: photo- comb. form, metro- comb. form², -graph comb. form.

Etymology: < photo- comb. form + metro- comb. form² + -graph comb. form. Compare earlier metrograph n.

Obsolete. rare.

An instrument for recording the intensity of light at different depths in water.

ΚΠ

1898 Geogr. Jrnl. 12 453 I have here a graphic representation of the results of experiments I made..with a photometrograph..,which shows how rapidly light loses its intensity in penetrating below the surface [of the sea].

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online June 2018).

单词	photometrograph
释义	† photometrographn. Origin: Formed within English, by compounding. Etymons: photo- comb. form, metro- comb. form², -graph comb. form. Etymology: < photo- comb. form + metro- comb. form² + -graph comb. form. Compare earlier metrograph n. Obsolete. rare. An instrument for recording the intensity of light at different depths in water. ΚΠ 1898 Geogr. Jrnl. 12 453 I have here a graphic representation of the results of experiments I made..with a photometrograph..,which shows how rapidly light loses its intensity in penetrating below the surface [of the sea]. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online June 2018). < n.1898
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