Definitions

1. adjective

tolerating or enduring a certain degree of cold or frost but not extreme conditions

“Some plants are semihardy and will survive light frosts but may not tolerate prolonged periods of cold.”

2. noun

a plant that can tolerate a certain degree of cold or frost but not extreme conditions

“The semihardy plants in the garden were able to withstand the light frost but suffered damage in the prolonged cold snap.”