Both Uses

nanotechnology
in
Oryx and Crake
(Auto-generated)

Wakulla Price had been Jimmy's lab partner in Nanotech Biochem, but her father was headhunted by a Compound on the other side of the continent, and she'd taken the high-speed sealed bullet train and was never seen again.†
p. 76.1 *

nanotech = the branch of engineering that deals with small things
He turned out to be excellent at Nanotech Biochem, and together he and Jimmy worked on their single-molecular-layer splicing project, managing to produce the required purple nematode using the colour-coder from a primitive seaweed — before schedule, and with no alarming variations.†
p. 76.6

Definitions:

(1) (nanotechnology)
the branch of engineering that deals with small things -- smaller than 100 nanometers, especially with the manipulation of individual molecules
(2) (meaning too rare to warrant focus)