that's

Etymology 1
From +.

Contraction

 * 1) That is.
 * 2) That has.
 * 3) That was.
 * 4) That does.
 * 1) That was.
 * 2) That does.
 * 1) That does.

Etymology 2
From.

Pronoun

 * 1)  whose, of which, in dialects that require a human antecedent for 'whose'
 * 2) * 1995, Aimo Seppänen & Göran Kjellmer. The dog that's leg was run over: On the genitive of the relative pronoun. English Studies 76, 389–400.
 * 3) * 2009, Doug Whitman, quoted in Neal Whitman, "We Don't Speak the Same Language" (blog post, 2011 March 23):
 * the only one that's title has been released
 * 1) * 2018, Jimmy Im, "I shopped at Amazon's new 4-star-product store in New York City — here's why I wouldn't do it again", CNBC.com, 2018 September 28:
 * It had products like a WiFi light bulb that's brightness and even color can be controlled via Smartphone.
 * 1) * 2018, Jimmy Im, "I shopped at Amazon's new 4-star-product store in New York City — here's why I wouldn't do it again", CNBC.com, 2018 September 28:
 * It had products like a WiFi light bulb that's brightness and even color can be controlled via Smartphone.
 * It had products like a WiFi light bulb that's brightness and even color can be controlled via Smartphone.