abscissic acid meaning

• [Medicine]
  Abscission-accelerating plant growth substance isolated from young cotton fruit,leaves of sycamore,birch,and other plants,and from potatoes,lemons,avocados,and other fruits.

• acid:    Noun: acid &n ...
• acid amino acid ligases:    [Medicine]Enzymes ...
• acid-amino-acid ligases:    [Medicine]Enzymes ...

Examples

1. The most important plant hormones are abscissic acid ( ABA ), auxins, ethylene, gibberellins, and cytokinins, though there are many other substances that serve to regulate plant physiology.