形容詞 electromagnetic:

1. pertaining to or exhibiting magnetism produced by electric charge in motion

1. Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation.
   激光器使偶然的混雜頻率的電磁輻射，變?yōu)橐粋€(gè)或更多的高度強(qiáng)化和連續(xù)的紫外線、可見(jiàn)光或紅外線輻射的分離頻率儀器中的一種
2. A device used to modulate an electromagnetic wave.
   調(diào)制器用以調(diào)制電磁波的裝置
3. An interconnected system for the distribution of electricity or electromagnetic signals over a wide area, especially a network of high-tension cables and power stations.
   輸電線路一個(gè)用來(lái)在廣大地區(qū)內(nèi)傳遞電力或電磁信號(hào)的內(nèi)部相聯(lián)的網(wǎng)絡(luò)，尤指由高壓電線和發(fā)電站組成的網(wǎng)絡(luò)
4. A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.
   核衰變產(chǎn)生的微粒或電磁波放射物的原子或分子由于核衰變放出的一束微粒或電磁波

e.lec.tro.mag.net.ic

adj.Abbr. EM（形容詞）縮寫 EM
Of or exhibiting electromagnetism.
電磁性的：電磁性的或顯示電磁性的

【引伸】
elec.tromagnet.ically
adv.（副詞）