What's the difference between laevigate and levigate?

Laevigate

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Definition:

• (a.) Having a smooth surface, as if polished.

Example Sentences:

Levigate

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Definition:

• (a.) Made less harsh or burdensome; alleviated.
• (v. t.) To make smooth in various senses
• (v. t.) To free from grit; to reduce to an impalpable powder or paste.
• (v. t.) To mix thoroughly, as liquids or semiliquids.
• (v. t.) To polish.
• (v. t.) To make smooth in action.
• (v. t.) Technically, to make smooth by rubbing in a moist condition between hard surfaces, as in grinding pigments.
• (a.) Made smooth, as if polished.

Example Sentences:

• (1) 1966.-The isolation of ribosomes from Bacillus subtilis spores was accomplished by freezing the spores in liquid nitrogen and grinding the spore pellet with an equal weight of levigated alumina.