English
halometer
From halo- + -meter.
Today it means
noun An instrument for measuring the forms and angles of salts and crystals.
Language periods are conventional ranges, not dates for this word.
Etymograph / halometer
English
From halo- + -meter.
noun An instrument for measuring the forms and angles of salts and crystals.
Language periods are conventional ranges, not dates for this word.
Etymograph / halometer