esp. in time-travel contexts: in, into, or toward the past; cf. uptime adv.
He would take certain stamps and coins uptime and sell them to dealers; he would go downtime with a few aluminum vessels, which were worth more than gold.
There Will Be Time (1973) 51
Downtime, the air was clean, the water sweet.
Empire of Time (1985) 38
You know, of course, about the new chronoplanes they’ve discovered far downtime, in the Permian? Four of them so far.
Empire of Time (1985) 180
I fall downtime to the beginning of the universe.
Millennium ii. 21
But of course he had been loaded to the brim with antigens before leaving downtime.
Thebes of Hundred Gates 41
A little information can leak from the future into the past, but history must be consistent. If enough information leaks downtime to threaten an inconsistency, the offending wormhole connection can snap.
At Dorado in Asimov’s Science Fiction Oct.–Nov. 72
Poul Anderson, "There Will Be Time"
Research HistoryFred Galvin submitted a cite from a 1985 reprint of Crawford Kilian's "The Empire of Time"; we would like to verify the cite in the 1978 first edition.
We would like cites of any date from other sources. There are a few examples in the opposite sense, 'in or into the future'; we need to be careful about this, and consider an entry for this sense.
Last modified 2021-02-22 13:58:37
In the compilation of some entries, HDSF has drawn extensively on corresponding entries in OED.