Definition

1. Proper noun:

   • A surname of Scottish origin: "Todd" is primarily used as a family name.
   • A fictional character: Specifically, a barber who murders his customers in a play by George Pitt.

2. Noun:

   • A reference to Sir Alexander Robertus Todd: A Scottish chemist, born 1907, who won the Nobel Prize for his research on the structure of nucleotides and nucleic acids.

Usage Examples

• Proper noun (Surname):

  • Mr. Todd will be joining the meeting.
  • The Todd family has lived here for generations.

• Proper noun (Fictional character):

  • The most infamous character in the play is the barber, Todd.
  • Todd's sinister actions drive the plot.

• Noun (Referring to the chemist):

  • The discovery by Todd was a milestone in biochemistry.
  • Todd's work laid the foundation for understanding DNA.

Advanced Usage

• "A Todd": Can be used informally to refer to a person with the surname Todd.

  • Are you a Todd from the Glasgow branch?

• In academic contexts, "Todd" can be a shorthand reference to the chemist's contributions.

  • This mechanism was first elucidated by Todd.

Variants and Related Words

• Todd's: The possessive form of the surname.
  • This is Todd's laboratory notebook.

Synonyms

• Surname: Family name, last name.
• Chemist: Scientist, researcher (when referring to Alexander Todd).

Notes on Meaning

This word has two distinct, unrelated referents: 1. A common surname and a specific literary character. 2. The name of a specific, notable historical figure in science. The meaning is entirely dependent on context.

Noun

1. fictional character in a play by George Pitt; a barber who murdered his customers
2. Scottish chemist noted for his research into the structure of nucleic acids (born in 1907)