German word for science

In English? Not really. So Poul Anderson came up with worldken for science in his famous “Uncleftish Beholding” (yclept “Atomic Theory”), and worldken folk for his scientists.

Here’s just the start of it:

For most of its being, mankind did not know what things are made
of, but could only guess. With the growth of worldken, we began
to learn, and today we have a beholding of stuff and work that
watching bears out, both in the workstead and in daily life.

The underlying kinds of stuff are the firststuffs, which link
together in sundry ways to give rise to the rest. Formerly we
knew of ninety-two firststuffs, from waterstuff, the lightest and
barest, to ymirstuff, the heaviest. Now we have made more, such
as aegirstuff and helstuff.

The firststuffs have their being as motes called unclefts.
These are mightly small; one seedweight of waterstuff holds a
tale of them like unto two followed by twenty-two naughts. Most
unclefts link together to make what are called bulkbits. Thus,
the waterstuff bulkbit bestands of two waterstuff unclefts, the
sourstuff bulkbit of two sourstuff unclefts, and so on. (Some
kinds, such as sunstuff, keep alone; others, such as iron, cling
together in ices when in the fast standing; and there are yet
more yokeways.) When unlike clefts link in a bulkbit, they make
bindings. Thus, water is a binding of two waterstuff unclefts
with one sourstuff uncleft, while a bulkbit of one of the
forestuffs making up flesh may have a thousand thousand or more
unclefts of these two firststuffs together with coalstuff and
chokestuff.

At first is was thought that the uncleft was a hard thing that
could be split no further; hence the name. Now we know it is made
up of lesser motes. There is a heavy kernel with a forward
bernstonish lading, and around it one or more light motes with
backward ladings. The least uncleft is that of ordinary
waterstuff. Its kernel is a lone forwardladen mote called a
firstbit. Outside it is a backwardladen mote called a
bernstonebit. The firstbit has a heaviness about 1840-fold that
of the bernstonebit. Early worldken folk thought bernstonebits
swing around the kernel like the earth around the sun, but now we
understand they are more like waves or clouds.

There’s more where that came from, like this:

By shooting motes into kernels, worldken folk have shifted
samesteads of one firststuff into samesteads of another. Thus did
they make ymirstuff into aegirstuff and helstuff, and they have
afterward gone beyond these. The heavier firststuffs are all
highly lightrottish and therefore are not found in the
greenworld.

It’s quite creative and all, but what we speak now is perfectly fine.