1
Core relationship
Introduce the intended purpose of an action, often in formal writing.
Example
Samples were sealed so as to avoid contamination.
so as to
/səʊ æz tuː/ · soh AZ toopurpose phrase
Introduce the intended purpose of an action, often in formal writing.
Use so as to to express this relationship precisely: introduce the intended purpose of an action, often in formal writing.
What so as to Really Means
The word becomes easier to use when its closely related senses are separated and compared.
2
Noun-phrase frame
Use this expression in its normal grammatical frame so the relationship between the surrounding ideas remains explicit.
Example
The scale was adjusted so as to improve accuracy.
3
Analytical use
It tells the reader how to interpret the timing, scope, evidence, contrast, condition, or consequence in the statement.
Example
The files were numbered so as to preserve their original order.
Use so as to Naturally
Notice how the surrounding noun or clause reveals the exact shade of meaning.
Samples were sealed so as to avoid contamination.
The scale was adjusted so as to improve accuracy.
The files were numbered so as to preserve their original order.
Precision Matters
So as to overlaps with several common words, but each carries a different emphasis.
so as to
vs.Means introduce the intended purpose of an action, often in formal writing.
in order to
Means introduce the intended purpose of an action.
so as to
vs.Means introduce the intended purpose of an action, often in formal writing.
for the purpose of
Means with the specific aim or intention of doing something.
so as to
vs.Means introduce the intended purpose of an action, often in formal writing.
as a means of
Means as a method or instrument for achieving a purpose.
so as to
vs.Means introduce the intended purpose of an action, often in formal writing.
for the sake of
Means for the benefit, preservation, clarity, convenience, or purpose of someone or something.
Test so as to in Context
Preventing sequence effects is the intended purpose of randomisation.
1
The researchers randomised the presentation order ___ prevent sequence effects.