preharden
preharden · prehardens · prehardened · prehardening
To harden before machiningTo harden before machining.
Meaning
1 sensesTo harden before machining.
Origin
From pre- + harden.From pre- + harden.
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Forms
prehardens, prehardening, prehardened, prehardened| Base form | preharden · to preharden |
|---|---|
| 3rd person singular | prehardens |
| Present participle | prehardening |
| Past simple | prehardened |
| Past participle | prehardened |
regular · Lesson
Lessons for this word
3 lessons- A1Present simple — Because it is a verb
- A1Past simple, regular verbs — Because of its past form
- A2Present perfect: introduction — Because of its past participle