whereby

American  

[wair-bahy, hwair-] / wɛərˈbaɪ, ʰwɛər- /

conjunction

1. by what or by which; under the terms of which.

2. Obsolete. by what? how?

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whereby British  

/ wɛəˈbaɪ /

pronoun

1. by or because of which

   the means whereby he took his life

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adverb

1. archaic how? by what means?

   whereby does he recognize me?

Etymology

Origin of whereby

First recorded in 1150–1200, whereby is from the Middle English word wherby. See where, by

Example Sentences

“Frankly, we respect Microsoft’s innovation culture, whereby it is willing to partner with others that may be innovating faster,” UBS said.

From Barron's

Currie referred to “molecular contagion” whereby the ripple effect of the closure of the Strait Of Hormuz is spreading out around the world.

From MarketWatch

MM: How did you come up with the book’s fab format, whereby each of you writes your own introduction, and then each chapter starts with Neal’s thoughts about one of the 36 rules and ends with Annie’s?

From Los Angeles Times

The Chase Sapphire Reserve, for instance, has a feature called Pay Yourself Back, whereby cardholders can redeem points toward statement credits for purchases made in certain categories.

From The Wall Street Journal

Pariah Capital, for new readers, is a long-running, somewhat tongue-in-cheek feature whereby we highlight the investments that are most out of fashion on Wall Street and most hated, or at least unloved, by the committees running the biggest pension funds, endowments and other assets.

From MarketWatch