直向[hitamuki] earnest
安直[anchoku] inexpensive
一直[icchoku] lining out to first base
一直線[icchokusen] straight line
鉛直[enchoku] perpendicular

下駄直し[getanaoshi] repairing clogs
開き直る[hirakinaoru] to become defiant
気を取り直す[kiwotorinaosu] to completely rethink
急転直下[kyuutenchokka] suddenly and precipitately
居直る[inaoru] to sit up properly straight

アルファ線[arufasen] alpha rays
エックス線[ekkususen] X-ray
サイン曲線[sainkyokusen] sinusoid
スピード線[supiidosen] speed lines
緯線[isen] parallel

一次線輪[ichijisenrin] primary coil
一線[issen] line
一直線[icchokusen] straight line
一番線[ichibansen] track no. 1
一塁線[ichiruisen] first-base line

遠距離[enkyori] long distance
可聴距離[kachoukyori] audible distance
距たる[hedataru] to be distant
距てる[hedateru] to separate (by distance, time, etc.)
距離[kyori] distance

近距離[kinkyori] short distance
走行距離[soukoukyori] distance travelled
短距離[tankyori] short distance
中距離[chuukyori] middle-distance (races)
中距離競走[chuukyorikyousou] middle-distance race

グループ分離キャラクタ[guruupubunrikyarakuta] group separator
ファイル分離キャラクタ[fairubunrikyarakuta] file separator
ユニット分離キャラクタ[yunittobunrikyarakuta] unit separator
レコード分離キャラクタ[rekoodobunrikyarakuta] record separator
引離す[hikihanasu] to pull apart

遠距離[enkyori] long distance
遠心分離[enshinbunri] centrifugation
遠心分離機[enshinbunriki] centrifuge
可聴距離[kachoukyori] audible distance
解離[kairi] dissociation