See Also: parbuckle(dictionary)

plastoquinone (iou) and parbuckle (iou)


plastoquinone (iou)



plastoquinone noun. M20.
[from CHLORO)PLAST + -O- + QUINONE.]
Biochemistry. Any of a homologous series of compounds which have a quinone nucleus with a terpenoid side-chain, esp. one of these involved in electron transfer during photosynthesis in the chloroplasts of plants.

parbuckle (iou)



parbuckle noun & verb. As noun orig. parbunkle. E17.
[Origin unkn. Later form by assoc. with buckle.]
A. noun. A rope arranged like a sling, for raising or lowering heavy objects, esp. casks or cylindrical objects. E17.
b. verb trans. Raise or lower (a cask, gun, etc.) with a parbuckle. M19.