| ABORTIONIST | • abortionist n. (Now sometimes offensive) A person who performs abortions, especially illegally or secretly. • abortionist n. (Chiefly derogatory) A person who advocates for or supports the legality of abortion. • ABORTIONIST n. one who induces abortions. |
| ASTROBOTANY | • astrobotany n. Synonym of xenobotany. • ASTROBOTANY n. the branch of botany that investigates the possibility that plants grow on other planets. |
| BATTLEDOORS | • battledoors n. Plural of battledoor. • BATTLEDOOR n. (obsolete) a light bat for striking a shuttlecock, also BATTLEDORE. |
| BITTERROOTS | • bitterroots n. Plural of bitterroot. • BITTERROOT n. a plant allied to the purslane, growing in the mountains of Idaho, Montana, etc. |
| BITTERWOODS | • bitterwoods n. Plural of bitterwood. • BITTERWOOD n. a West Indian tree from the wood of which the bitter drug Jamaica quassia is obtained. |
| BRONTOBYTES | • brontobytes n. Plural of brontobyte. • BRONTOBYTE n. a very large unit of computer memory. |
| OBSTRICTION | • obstriction n. The state of being constrained, bound, or obliged. • obstriction n. That which constrains or obliges; obligation; bond. • OBSTRICTION n. (obsolete) obligation. |
| OBSTRUCTION | • obstruction n. The act of obstructing, or state of being obstructed. • obstruction n. Something which obstructs or impedes, either intentionally or unintentionally. • obstruction n. The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death. |
| OBSTRUCTORS | • obstructors n. Plural of obstructor. • OBSTRUCTOR n. one who obstructs, also OBSTRUCTER. |
| OBTURATIONS | • obturations n. Plural of obturation. • OBTURATION n. an obstruction. |
| POSTORBITAL | • postorbital adj. Behind the orbit of the eye. • postorbital n. A postorbital bone or scale. • POSTORBITAL adj. situated behind the eye. |
| ROBOTICISTS | • roboticists n. Plural of roboticist. |
| ROUSTABOUTS | • roustabouts n. Plural of roustabout. • ROUSTABOUT n. a casual or unskilled laborer, esp. on an oil rig, also ROUSEABOUT. |
| STROBOTRONS | • strobotrons n. Plural of strobotron. • STROBOTRON n. a gas-filled electron tube used esp. as a source of bright flashes of light for a stroboscope. |
| TRIBOLOGIST | • tribologist n. A specialist in tribology. • TRIBOLOGIST n. a student of tribology. |
| TROMBONISTS | • trombonists n. Plural of trombonist. • TROMBONIST n. one who plays the trombone. |
| TROPHOBLAST | • trophoblast n. (Cytology) The membrane of cells that forms the wall of a blastocyst during early pregnancy, providing… • TROPHOBLAST n. the outermost layer of cells in the morula that attaches the fertilized ovum to the uterine wall and acts as a nutritive pathway. |
| TROUBLESHOT | • troubleshot v. Simple past tense and past participle of troubleshoot. • TROUBLESHOOT v. to solve problems. |