What is "infusions"

Usage examples of "infusions".

I also procured some extract of hyoscyamus from three shops, and made infusions of the same strength as before.

Of these three infusions, only one acted on some of the leaves, which were tried.

To these may be added dissolved sugar and gum, diluted alcohol, and vegetable infusions not containing albumen, for none of these, as shown in the last chapter, excite inflection.