1. (verb) make more subtle or refined

• sublimate
• subtilize

2. (verb) weaken the consistency of (a chemical substance)

• attenuate

1. (verb) lessen the density or solidity of

• alter
• change
• modify

2. (verb) make more subtle or refined

• alter
• change
• modify

3. (verb) weaken the consistency of (a chemical substance)

• weaken

1. (verb) weaken the consistency of (a chemical substance)

• chemical science
• chemistry

1. (verb) lessen the density or solidity of

• rarefaction

2. (verb) weaken the consistency of (a chemical substance)

• attenuation
• rarefaction