'Resting spore' definitions:

Definition of 'resting spore'

(from WordNet)
noun
A spore of certain algae or fungi that lies dormant; may germinate after a prolonged period

Definition of 'Resting spore'

From: GCIDE
  • Resting \Rest"ing\, a. & n. from Rest, v. t. & i. [1913 Webster]
  • Resting spore (Bot.), a spore in certain orders of algae, which remains quiescent, retaining its vitality, for long periods of time. --C. E. Bessey. [1913 Webster]