IPA: /ˌdʒiːəʊˈtrɪpɪzəm/
KK: /jiˈoʊtrəˌpɪzəm/
The way a plant grows in response to gravity, such as roots growing downward.
The roots of the plant showed geotropism by growing deeper into the soil.
Geotropism is formed from "geo-" (meaning earth) and "tropism" (from Greek "tropos", meaning turn or change). The word describes the growth or movement of organisms in response to the earth's gravitational pull.
Think of 'geo-' meaning earth and 'tropism' meaning a turning or change — this helps you remember that geotropism refers to how plants grow in response to the earth.