You searched for: “aculeation”
aculeation (s) (noun), aculeations (pl)
A condition of being sharpened or pointed: The aculeation of Sam's pencils was commented on quite positively by his teacher in school.

When Bob bought the cactus its spines were all in a state of aculeation, but later on it lost all of its sharply pointed projections and died.

This entry is located in the following units: acuto-, acut-, acuti-, acu-, -cusis; also, agu- (page 2) -ation, -ization (-iz[e] + -ation); -isation (British spelling variation) (page 2)