IPA: /ˈɡriːnˌsɪk.nəs/
KK: /ˈɡrinˌsɪk.nəs/
A condition in plants where leaves turn yellow due to insufficient chlorophyll, often caused by nutrient deficiencies.
The farmer noticed greensickness in his crops, indicating they needed more nutrients.
Greensickness is formed from "green" (from Old English "grene", meaning the color of growing plants) and "sickness" (from Old English "sēocness", meaning the state of being ill). The term originally referred to a condition characterized by a pale greenish complexion, often associated with illness or a lack of vitality.
Think of the color 'green' representing a lack of health, as 'greensickness' describes a state of being unwell with a pale, greenish appearance.