| BREAKTHROUGHS | • breakthroughs n. Plural of breakthrough. • BREAKTHROUGH n. an offensive thrust that penetrates and carries beyond a defensive line in warfare. |
| CERAUNOGRAPHS | • ceraunographs n. Plural of ceraunograph. • CERAUNOGRAPH n. an instrument for recording thunderstorms by detecting the radio waves generated, also KERAUNOGRAPH. |
| COUNTERCHARGE | • countercharge n. An accusation against an opponent in an argument in response to the opponent’s accusations. • countercharge n. An thrust or charge against an enemy in response to their previous attack. • countercharge v. (Heraldry) To reverse the colors. |
| DAUGHTERBOARD | • daughterboard n. (Computing, electronics) A circuit board that is an extension of a motherboard or other card. • DAUGHTERBOARD n. a small circuit board that can be attached to the motherboard of a computer. |
| HELIOGRAVURES | • heliogravures n. Plural of heliogravure. • HELIOGRAVURE n. photogravure. |
| KERAUNOGRAPHS | • keraunographs n. Plural of keraunograph. • KERAUNOGRAPH n. an instrument for detecting distant thunderstorms, also CERAUNOGRAPH. |
| LAUGHWORTHIER | • LAUGHWORTHY adj. worthy of being laughed at. |
| PHOTOGRAVURES | • photogravures n. Plural of photogravure. • PHOTOGRAVURE n. printing from engraved plates photographically prepared. |
| REAUTHORISING | • REAUTHORISE v. to authorise again, also REAUTHORIZE. |
| REAUTHORIZING | • reauthorizing v. Present participle of reauthorize. • REAUTHORIZE v. to authorize again, also REAUTHORISE. |
| ROUTEMARCHING | • routemarching v. Present participle of routemarch. • route-marching v. Present participle of route-march. • route␣marching v. Present participle of route march. |
| SURROGATESHIP | • surrogateship n. The position or office of a surrogate. • SURROGATESHIP n. the office of surrogate. |
| THOROUGHBRACE | • thoroughbrace n. (Dated) A leather strap supporting the body of a carriage, and attached to springs or serving as a spring itself. • THOROUGHBRACE n. any of several leather straps supporting the body of a carriage and serving as springs. |
| THOROUGHFARES | • thoroughfares n. Plural of thoroughfare. • THOROUGHFARE n. a through road. |
| TURBOCHARGERS | • turbochargers n. Plural of turbocharger. • TURBOCHARGER n. a centrifugal blower driven by exhaust gas turbines and used to supercharge an engine. |
| UNREPROACHING | • unreproaching adj. That does not reproach. • UNREPROACHING adj. not reproaching. |
| URANOGRAPHERS | • uranographers n. Plural of uranographer. • URANOGRAPHER n. one who maps the constellations. |
| URANOGRAPHIES | • uranographies n. Plural of uranography. • URANOGRAPHY n. descriptive astronomy and mapping. |