they had some latent moral for his own improvement
Not a latent echo in the house, not a squeak and scuffle from the mice behind the panelling, not a drip from the half-thawed water-spout in the dull yard behind, not a sigh among the leafless boughs of one despondent poplar, not the idle swinging of an empty store-house door, no, not a clicking in the fire, but fell upon the heart of Scrooge with a softening influence, and gave a freer passage to his tears.
There are no more uses of "latent" in the book.
Show samples from other sources
She is unschooled, but I think she has latent talent as an engineer.
A latent HPV infection reactivated when her immune system weakened with age.