This word was listed in the famous Vocabulario de la lengua tagala, the first dictionary of the Tagalog language in the Philippines.
pa·tu·mal·mál
petrified / hardened
Here is the phrase given as an example:
bagang patumalmal
petrified charcoal
The Spanish-language definition given for it is cosa empernida y dura.
KAHULUGAN SA TAGALOG
patumalmal: nanigas o matigas na matigas
