noun, verb, blot⋅ted, blot⋅ting.| 1. | a spot or stain, esp. of ink on paper. |
| 2. | a blemish on a person's character or reputation: He had been haunted by a blot on his past. |
| 3. | Archaic. an erasure or obliteration, as in a writing. |
| 4. | to spot, stain, soil, or the like. |
| 5. | to darken; make dim; obscure or eclipse (usually fol. by out): We watched as the moon blotted out the sun. |
| 6. | to dry with absorbent paper or the like: to blot the wet pane. |
| 7. | to remove with absorbent paper or the like. |
| 8. | to make a blot; spread ink, dye, etc., in a stain: The more slowly I write, the more this pen blots. |
| 9. | to become blotted or stained: This paper blots too easily. |
| 10. | Chemistry. to transfer an array of separated components of a mixture to a chemically treated paper for analysis. Compare gel, gel electrophoresis. |
| 11. | blot out,
|

blot (blŏt)
n.
The Northern, Southern, or Western blot analyses.