blot

\ ˈblät

Definition of blot

(Entry 1 of 3)

1 : a soiling or disfiguring mark : spot

2 : a mark of reproach : moral flaw

3 : a usually nitrocellulose or nylon sheet that contains spots of immobilized macromolecules (as of DNA, RNA, or protein) or their fragments and is used to identify specific components of the spots by applying a molecular probe (such as a complementary nucleic acid or a radiolabeled antibody) — compare southern blot, western blot

blot

verb

blotted; blotting

Definition of blot (Entry 2 of 3)

transitive verb

1 : to spot, stain, or spatter with a discoloring substance

2 obsolete : mar especially : to stain with infamy

3a : to dry (something, such as writing) with an absorbing agent hastily blotted her letter

b : to remove with absorbing material blotting up spilled water

intransitive verb

1 : to make a blot

2 : to become marked with a blot

blot

noun (2)

Definition of blot (Entry 3 of 3)

1 : a lone backgammon man exposed to capture

2 archaic : a weak or exposed point

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Cite this Entry

“Blot.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/blotting. Accessed 22 January 2020.

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More Definitions for blot

blot

verb

English Language Learners Definition of blot

: to dry (something, such as wet ink) by pressing a piece of cloth or paper over it

See the full definition for blot in the English Language Learners Dictionary

blot

noun

\ ˈblät

Kids Definition of blot

(Entry 1 of 2)

1 : a spot or stain of dirt or ink

2 : a mark of shame or dishonor The lie was a blot on my record.

blot

verb

blotted; blotting

Kids Definition of blot (Entry 2 of 2)

1 : spot entry 2 sense 1

2 : to dry by pressing with paper or cloth

blot out

1 : to make (something) difficult to see Clouds blotted out the sun.

2 : to destroy completely No apology could blot out what I had said …— Robert Louis Stevenson, Kidnapped

blot

noun

\ ˈblät

Medical Definition of blot

: a nitrocellulose sheet that contains spots of immobilized macromolecules (as of DNA, RNA, or protein) or their fragments and that is used to identify specific components of the spots by applying a suitable molecular probe (as a complementary nucleic acid or a radiolabeled antibody) — see northern blot, southern blot, western blot

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