ぴかぴか光る[pikapikahikaru] to sparkle
旭光[kyokkou] rays of the rising sun
威光[ikou] power
稲光[inabikari] (flash of) lightning
曳光弾[eikoudan] tracer bullet

栄光[eikou] glory
円光[enkou] halo
炎光[enkou] flame
黄道光[koudoukou] zodiacal light
可視光線[kashikousen] visible ray

御目出度う御座います[omedetougozaimasu] congratulations
急度[kitto] surely
此度[konotabi] this occasion
その都度[sonotsudo] each time it happens
度に[tabini] each time

の度に[notabini] on the occasion of
印度[indo] India
印度支那[indoshina] Indochina
沃度丁幾[youdochinki] tincture of iodine
悪性度[akuseido] malignancy

逸速く[ichihayaku] promptly
音速[onsoku] speed of sound
加速[kasoku] acceleration
加速運動[kasokuundou] accelerated motion
加速度[kasokudo] acceleration

快速[kaisoku] high speed
快速電車[kaisokudensha] high-speed train
角速度[kakusokudo] angular velocity
急速[kyuusoku] rapid (e.g. progress)
減速[gensoku] deceleration