1

blot

noun \ ˈblät \

Definition of blot

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

Origin and Etymology of blot

Middle English


2

blot

verb

Definition of blot

blotted; blotting
transitive verb
1 : to spot, stain, or spatter with a discoloring substance
2 obsolete : mar; especially : to stain with infamy
3 a : 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

Examples of blot in a Sentence

  1. Don't rub the wine stain. Blot it dry with a paper towel.

  2. Blot your lipstick with a tissue.

First Known Use of blot

15th century


3

blot

noun

Definition of blot

1 : a lone backgammon man exposed to capture
2 archaic : a weak or exposed point

Origin and Etymology of blot

perhaps from Dutch bloot naked, exposed, from Middle Dutch; akin to Middle High German bloz bare



BLOT Defined for English Language Learners

blot

verb

Definition of blot for English Language Learners

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


BLOT Defined for Kids

1

blot

noun \ ˈblät \

Definition of blot for Students

1 : a spot or stain of dirt or ink
2 : a mark of shame or dishonor
  • The lie was a blot on my record.

2

blot

verb

Definition of blot for Students

blotted; blotting
1 : 2spot 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

Medical Dictionary

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

blot

transitive verb


Seen and Heard

What made you want to look up blot? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to remove or wipe out

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!