| BULLETPROOF | • bulletproof adj. (Of a material) Capable of withstanding a direct shot by a bullet fired from a gun. • bulletproof adj. (Idiomatic) Reliable, infallible, sturdy or error-tolerant. • bulletproof adj. (Usually of an idea or concept) Unbreakable, very tough. |
| FETOPROTEIN | • fetoprotein n. (Biochemistry) Any of several antigens produced in a developing embryo, of which the most common is alpha-fetoprotein. • FETOPROTEIN n. any of several fetal antigens present in the adult in some abnormal conditions. |
| FLUOROTYPES | • fluorotypes n. Plural of fluorotype. • FLUOROTYPE n. (obsolete) photography by means of fluorides. |
| FOETIPAROUS | • foetiparous adj. Alternative form of fetiparous. • FOETIPAROUS adj. of marsupials, such as the kangaroo, giving birth to incompletely developed offspring, also FETIPAROUS. |
| FOREPOINTED | • forepointed v. Simple past tense and past participle of forepoint. • FOREPOINT v. to foreshadow. |
| FORETOPMAST | • foretopmast n. (Nautical) The mast above the foretop. • FORETOPMAST n. the mast above the foretop platform. |
| FORTEPIANOS | • fortepianos n. Plural of fortepiano. • FORTEPIANO n. the eighteenth century name for an early type of piano; a fortepiano note. |
| MOTHPROOFED | • mothproofed v. Simple past tense and past participle of mothproof. • MOTHPROOF v. to proof against moths. |
| MOTHPROOFER | • mothproofer n. Any substance used to make things mothproof. • MOTHPROOFER n. a substance that keeps away moths. |
| OUTPERFORMS | • outperforms v. Third-person singular simple present indicative form of outperform. • OUTPERFORM v. to exceed in performance. |
| PERFORATION | • perforation n. The act of perforating or the state of being perforated. • perforation n. Any opening in a solid object. • perforation n. (Medicine) An abnormal opening in an organ, such as a rupture. |
| PERFORATORS | • perforators n. Plural of perforator. • PERFORATOR n. a machine for perforating. |
| PERFORATORY | • PERFORATORY adj. causing perforation, also PERFORATIVE. |
| PIANOFORTES | • pianofortes n. Plural of pianoforte. • piano-fortes n. Plural of piano-forte. • PIANOFORTE n. (Italian) a large keyboard musical instrument. |
| PROFITEROLE | • profiterole n. A small, hollow case of choux pastry with a filling. • PROFITEROLE n. (French) a small puff of choux pastry, usually filled with cream and covered with a chocolate sauce. |
| PROFOUNDEST | • profoundest adj. Superlative form of profound: most profound. • PROFOUND adj. very deep. |
| PUSSYFOOTER | • pussyfooter n. One who pussyfoots. • PUSSYFOOTER n. one who pussyfoots. |
| RUSTPROOFED | • rustproofed v. Simple past tense and past participle of rustproof. • RUSTPROOF v. to make resistant to rust, such as by applying a coating. |
| TAMPERPROOF | • tamperproof adj. Resistant to tampering. • tamperproof v. (Transitive) To make resistant to tampering. • TAMPERPROOF adj. proof against tampering. |
| WATERPROOFS | • waterproofs v. Third-person singular simple present indicative form of waterproof. • waterproofs n. Plural of waterproof. • WATERPROOF v. to make waterproof. |