"The artist would etch the metal plate using acid".
He etched his name into the rock.
The fancy mansion's windows were even fancier with a picture of a crown etched in them.
The artist carefully etched the design into the metal plate using a sharp burin.
The word etched is a verb. It is the past tense of etch.
According to a Google search "etched into our memories" has 539,000 hits."Etched in our memories" has 458,000 hits."Etched onto our memories" has only 3,070 hits.Accordingly I recommend "Etched into" or "Etched in"Dictionary.com also includes the sample sentence: "Adeep canyon was etched intothe land by the river'srushing waters."
You can use the word Truss in a sentence like this.
Can you use the word concluding in a sentence? Done.
Just use it! Or do you mean, can you use the word beheld in a sentence.
How do you use the word decibel in a sentence?What is decibel used for?
You can use the word Terrorist in a sentence as " Muslims are not terrorist ".
You just did use the word colonize in a sentence.
Since that is not a word I would not attempt to use it in a sentence.