See Also: triplet state(medicine)
triplet(dictionary)
Triplet(medicine)
triplet(dictionary)
nonsense triplet(medicine)
state-of-the-art(dictionary)
out-of-state(dictionary)
Mon State(tourism)
state(encyclopedia)
co-State(dictionary)

indefatigable (iou) and triplet state (medicine)


indefatigable (iou)



indefatigable adjective. E17.
[French indefatigable (now infatigable) or Latin indefatigabilis, formed as IN-3 + DE- + fatigare exhaust: see -ABLE.]
Unable to be wearied or tired out; untiring; unremitting in effort.
C. Chaplin The American is..an indefatigable tryer. P. Gay His indefatigable efforts to secure the guardianship.
indefatiga'bility noun M17.
indefatigableness noun M17.
indefatigably adverb L16.

triplet state (medicine)


triplet state


A second excited state of a molecule (e.g., chlorophyll) produced by absorption of light to produce the singlet state, then loss of some energy (fluorescence) to arrive at the longer-lived triplet state The molecule may remain sufficiently long in the triplet state for a second activating light quantum to be effective in producing a "second triplet" state, obviously at still a higher level of excitation, hence reactivity. Alternatively, it may lose the triplet state energy directly and return to the ground state.