Definition of acervulus in English:

acervulus

noun

  • 1Anatomy
    Anatomy. More fully acervulus cerebri: a collection of small calcified concretions situated within or near the pineal body; = brain sand. In later use also: an individual concretion of this kind.

  • 2Mycology
    Mycology. In certain fungi pathogenic to plants: a flat, typically round mass of hyphae bearing conidiophores which is produced below the epidermis of the host plant.

Origin

Late 18th century. Originally from post-classical Latin acervulus (in acervulus cerebri from acervulus small heap or collection + classical Latin cerebrī, genitive singular of cerebrum).

Pronunciation:

acervulus

/əˈsəːvjʊləs/