noun
plant hormone; phytohormone
Scientific term for hormones that regulate plant growth and development.
植物ホルモンは、植物の成長を調節する化学物質です。
Plant hormones are chemical substances that regulate plant growth.
General term for 'hormone' in animals and humans; 植物ホルモン specifies plant hormones.
Compound of 植物 (plant) and ホルモン (hormone), a direct calque of English 'plant hormone'.