(historical) An effect supposedly produced on a child in the womb as a result of a powerful mental or physical influence on the mother; thought to explain birth defects etc. before the modern understanding of genetics.

Alternative spelling of sulfur impression

present participle of make an impression

To affect someone strongly and often favorably.

simple past tense and past participle of make an impression

Third-person singular simple present indicative form of make an impression

(idiomatic, followed by a clause) Thinking or making assumptions, often incorrectly.

a sulfur cast

(art, architecture) A sketch or drawing of someone or something, produced when it is not possible to take a photograph.

Any sensation that persists after the stimulus has ceased.