-in
- a neutral carbohydrate: inulin
- a glycoside: amygdalin
- a protein: albumin
- a glyceride: palmitin
- an enzyme: rennin
- an antibiotic: streptomycin
- an alkaloid or a nitrogenous base: codein
- a pharmaceutical preparation: chrysarobin
- a commercial product, material, or mixture: algin
- an antigen: tuberculin
any of various mass actions or gatherings of a (specified) type, as a political demonstration or a form of entertainment: pray-in, be-in
See -in in American Heritage Dictionary 4
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