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Glite Dictionary
apple rust

apple rust

7.0
A disease on apple and pear trees that makes orange or brown spots
  • noun
  • Specialized
translation icon : óxido de manzana
  • The tree showed signs of apple rust.
  • cedar apple rust

Examples

  • Gardeners are encouraged to inspect their trees regularly for signs of apple rust.

  • The orchard suffered significant crop loss due to apple rust this season.

  • Applying a fungicide early in the spring can help control apple rust outbreaks.

  • Farmers often worry about apple rust affecting their crops.

  • Cedar-apple rust can cause orange spots on the leaves and fruit of apple trees.

  • Farmers need to monitor their orchards for signs of apple rust to prevent crop damage.

  • The gardener noticed apple rust on the pears and treated the plants to control the disease.

Synonyms

rust
vsapple rust
  • Specialized
3 6.9

A plant disease caused by a fungus that makes reddish-brown spots on leaves and stems

is limited to certain fruit trees and shows orange or brown spots

Surface Forms

apple rust singular
apple rusts plural

Morphology

apple + rust

The compound is directly compositional: 'apple' names the host and 'rust' names the fungal disease, so 'apple rust' straightforwardly means rust affecting apple trees or fruit. This noun‑noun construction follows regular English compounding patterns and is cross‑linguistically transparent, so a B1 learner who knows both constituents would understand the meaning.

Etymology

The name apple rust comes from a simple image: the word rust was used because the fungus makes orange or brown patches that look like metal rust on the skin of an apple. That's why apple rust now means a 'disease' that makes rust-coloured 'spots' on apple trees.