corrugated
part of speech
adjective (corrugated); also the past form of the rare verb corrugate (corrugate, corrugates, corrugated, corrugating)
meaning for a pupil
1) Shaped into a row of ridges and grooves, like waves, so the material is stronger; corrugated iron and corrugated cardboard are made this way. tree →
2) Wrinkled or folded into lines, like a frowning forehead. tree →
sense in the lessons
In everyday life you meet corrugated cardboard in boxes and corrugated iron on sheds, fences and roofs, especially in Australia and New Zealand. In science and design lessons it shows how folding a thin sheet makes it much stiffer and stronger. A «corrugated road» (Australia) is a dirt road with bumpy ridges. Phrases: «corrugated iron», «corrugated cardboard», «corrugated roof», «corrugated plastic».
examples
- The old farm shed had a rusty corrugated iron roof. tree →
- We built a model house out of corrugated cardboard. tree →
- Rain drummed loudly on the corrugated roof. tree →
- In the experiment, the corrugated card held more coins than the flat card. tree →
- The car shook all the way along the corrugated dirt road. tree →
- His brow was corrugated with worry. tree →
- Corrugated boxes protect parcels in the post. tree →
note
An adjective, not normally compared (not «more corrugated» in normal use). Double r: cor-ru-gat-ed. Corrugated iron is usually steel coated with zinc, not pure iron — the name is old. The waves make the sheet stronger in one direction but it still bends easily along the ridges.
Trees and pragmatics
Every meaning and example of «corrugated» parsed by Mova, each sentence with its dependency tree and frames.