that's why it's called

Grammar usage guide and real-world examples

Alternatives include "hence the name", "that explains the name", or "this is the reason for the name", depending on the specific context.

While generally acceptable, "that's why it's called" can be considered somewhat informal. In formal writing, consider using more sophisticated alternatives such as "therefore it is termed" or "hence the nomenclature".

Ensure that the part of the sentence following "that's why it's called" clearly and directly explains the reason or origin of the name or term you are discussing. For example, "The car is called 'Fortwo'; "that's why it's called" Fortwo, because it's for two people".

Avoid using "that's why it's called" when the explanation is already obvious or when it does not add any significant clarification to the understanding of the term or name. Overuse can make your writing sound repetitive or condescending.