EDIT: Added past continuous, trimmed image so it would be slightly larger, and gave it a transparent background. EDIT: Added middle line, made some adjustments per @Kosmonaut.

In the medical profession we use the terms dilatation and dilation with great frequency. And, yet I've never gotten a sufficient answer as to why we use one vs. the other. Some, try to claim that dilatation is an active process (like dilatation and curettage), and dilation is a passive process....

What is the word/phrase to mean something that just happens once? For example, I have often been told/expected to do this and not to do that. I become aimless and gradually lose the idea of who I am. I ask myself "What is the point?" If life is just once thing, why can't I live my life in...

BEN ZIMMER, On Language The Origins of ‘One-Off’: The New York Times (Magazine) July 2, 2010 … this British usage of off typically appears with a number to indicate a quantity of items produced in some manufacturing process. The Oxford English Dictionary, … takes this back to a 1934 quotation...

I am reading some technical documents and there is a list of items that make up the product. Throughout the document where there are multiple items, they are listed as 2 off, 3 off and so on. For example it would be similar to this: My product comprising of: 2 off card 1 1 off card 2 1 off ...

The OED says (s.v. off, adv., prep., n.1, and adj.:) 12 Used with a preceding numeral to represent a quantity in production or manufacture, or an item or number of items so produced. Usu. as one off: see one-off n. Cf. once-off adj. and n. at once adv., conj., adj., and n. Special uses ...

What do you call an event that occurs only once in its environment? For instance, birth and death are two events that occur only once in the lifetime of a living thing. I am looking for a word or phrase that would be synonymous to "non-repeating".

Consider the following: One-time, one-off, one-shot, singleton, nonce. Some other perhaps-less-suitable words suggested in Antonym of "recurrent" [closed] include isolated, seldom, infrequent, non-periodic.

I am looking for a word or phrase which can describe the situation in which you order a valuable thing (maybe unique) such as a Ferrari or jet or something else. My friend told me that it should be called a custom car (or jet). I agree about that but I know there is another word which sounds much...

I am wondering if there is a single word that describes things that can be used only once. My focus is links that usually sent to our emails in order to activate accounts or reset passwords. However, I do not mind to find a word for all kind of items that can be used only one time (e.g. Bullets, ...

is this phrase correct grammatically? "They identify themselves as Pacifist, but the EU as a arrogant power" i mean, there is no need a verb in the second part?