词根词缀：for-, fora-

【来源及含义】Latin: bore, pierce, make holes; hole, holes; opening, openings,

【同源单词】biforate, foramen, foramen magnum, foramen ovale, foraminectomy, imperforate

词根词缀：penetra-, penetr-

【来源及含义】Latin: penetrare, penetratus, to go into, to enter, to pierce; to pass through, to pass into; a place within

【同源单词】impenetrable, impenetrableness, impenetrably, nonpenetrative, penetrability, penetrable

词根词缀：pung-, punc-, punct-

【来源及含义】Latin: pungere, punctum to strike, to hit, to punch, to pierce, to puncture, to point, to sting, to bite; a dot, a mark; a point, a sharp point, a pinpoint

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "sour, sharp": acerb-; aceto-; acid-; acies- (not "sour"); acuto- (not "sour"); oxy-.

【同源单词】acupoint, acupunctuate, acupunctuation, acupuncturation, acupuncture, acupuncture