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Glite Dictionary
cedar-apple rust

cedar-apple rust

9.1
A disease caused by a fungus that makes orange spots on the leaves and fruit of apple and pear trees
  • noun
  • /ˈsiːdər ˈæpl rʌst/
  • Specialized
translation icon : roya del manzano
  • Farmers use fungicides to control the spread of cedar-apple rust on apple trees.

Examples

  • Cedar-apple rust can be identified by the orange spots it causes on infected leaves and fruit.

  • The cedar-apple rust affected my apple trees this year.

  • The orchard lost much of its crop to cedar-apple rust this season.

  • Have you seen the damage from cedar-apple rust?

  • This year's apple harvest was ruined by a widespread outbreak of cedar-apple rust, leaving many trees covered in rust-colored spots.

  • Farmers in the region reported significant damage to their crops due to cedar-apple rust, affecting both apples and pears.

  • To control cedar-apple rust, it is essential to remove nearby cedar trees that harbor the fungus responsible for the disease.

Synonyms

rust
vscedar-apple rust
  • Specialized
3 6.9

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

is narrower and names the disease from one fungus species on those fruit trees
apple rust
vscedar-apple rust
  • Specialized
7.0

A disease on apple and pear trees that makes orange or brown spots

is caused by a single specific fungus species affecting the same fruit trees

Surface Forms

cedar-apple rust singular
cedar-apple rusts plural

Morphology

cedar-apple + rust

The noun 'rust' denotes a fungal disease, and the modifier 'cedar-apple' transparently names the host plants involved (cedar and apple). A B1 learner who knows 'cedar', 'apple', and 'rust' can readily infer this refers to a rust disease affecting those species, so the meaning is compositionally predictable.

Etymology

Cedar-apple rust comes from a fungus that lives on two trees, cedar and apple. The fungus makes orange, rust-colored spots on apple leaves and fruit, so people named the 'disease' after those trees and the orange rust spots.