| BRONDYRONS | • BRONDYRON n. (Spenser) a brand, a sword. |
| COSMOTRONS | • cosmotrons n. Plural of cosmotron. • COSMOTRON n. a large synchrotron used for accelerating protons to high energies. |
| CUPFERRONS | • CUPFERRON n. a compound used in chemical analysis. |
| CYCLOTRONS | • cyclotrons n. Plural of cyclotron. • CYCLOTRON n. a type of particle accelerator. |
| DECELERONS | • decelerons n. Plural of deceleron. • DECELERON n. a type of aileron. |
| EPHEMERONS | • EPHEMERON n. something of short lifetime. |
| MAGNETRONS | • magnetrons n. Plural of magnetron. • MAGNETRON n. a vacuum tube combined with a magnetic field to deflect electrons. |
| MELLOTRONS | • mellotrons n. Plural of mellotron. • MELLOTRON n. (tradename) an electronic keyboard instrument programmed to produce the tape-recorder sounds of orchestral instruments. |
| PERCHERONS | • Percherons n. Plural of Percheron. • PERCHERON n. (French) a draught-horse of a breed originating in La Perche in Normandy. |
| PHYTOTRONS | • phytotrons n. Plural of phytotron. • PHYTOTRON n. an apparatus that produces climates artificially for the study of plant growth. |
| RESNATRONS | • resnatrons n. Plural of resnatron. • RESNATRON n. a high-power, high-frequency tetrode. |
| SEMANTRONS | • semantrons n. Plural of semantron. • SEMANTRON n. (Greek) a wooden or metal bar struck with a mallet, used instead of a bell in Orthodox churches. |
| SIGMATRONS | • SIGMATRON n. a machine generating high-potential X-rays. |
| SUBMICRONS | • submicrons n. Plural of submicron. • SUBMICRON n. a particle visible by ultramicroscope but not by the ordinary microscope. |
| THYRATRONS | • thyratrons n. Plural of thyratron. • THYRATRON n. a gas-filled valve with a heated cathode, able to carry very high currents. |
| TIERCERONS | • tiercerons n. Plural of tierceron. • TIERCERON n. a subordinate rib springing from the intersection of two other ribs. |
| TRIHEDRONS | • trihedrons n. Plural of trihedron. • TRIHEDRON n. a solid figure with three plane surfaces meeting at a point. |