| Abbrev. | Meaning | Latin (or Neo-Latin) origin | 含义 |
|---|---|---|---|
| a.c. | before meals | ante cibum | 饭前 |
| a.d., ad, AD | right ear | auris dextra | 右耳 |
| a.m., am, AM | morning | ante meridiem | 早上 |
| nocte | every night | Omne Nocte | 每晚 |
| a.s., as, AS | left ear | auris sinistra | 左耳 |
| a.u., au, AU | both ears together or each ear | aures unitas or auris uterque | 双耳（一起）或每只耳朵 |
| b.d.s, bds, BDS | 2 times a day | bis die sumendum | 一天两次 |
| b.i.d., bid, BID | twice a day / twice daily | bis in die | 一天两次/每日两次 |
| gtt., gtts | drop(s) | gutta(e) | 滴（滴剂） |
| h., h | hour | hora | 小时 |
| qhs, h.s., hs | at bedtime or half strength | quaque hora somni | 每晚睡前/半浓度 |
| ii | two tablets | duos doses | 两片 |
| iii | three tablets | trēs doses | 三片 |
| n.p.o., npo, NPO | nothing by mouth / not by oral administration | nil per os | 空腹/不经口服用 |
| o.d., od, OD | right eyeonce a day (United Kingdom) | oculus dexteromne in die | 每日一次（英国）右眼 |
| o.s., os, OS | left eye | oculus sinister | 左眼 |
| o.u., ou, OU | both eyes | oculus uterque | 双眼 |
| p.c. | after food | post cibum | 饭后 |
| p.m., pm, PM | afternoon or evening | post meridiem | 下午或晚上 |
| p.o., po, PO | by mouth / oral administration | per os / nonstandard form per orem | 经口服用 |
| p.r., pr, PR | rectally / rectal administration | per rectum | 直肠给药 |
| p.r.n., prn, PRN | as needed, (also Pertactin - a key antigen of ac.Pertussis vaccine) | pro re nata | 需要时，也是百白破疫苗的关键抗原 |
| q. | every | quaque | 每 |
| q.1.h., q1h | every hour | quaque hora | 每小时 |
| q.2.h., q2h | every 2 hours | quaque secunda hora | 每2小时 |
| q.4.h., q4h | every 4 hours | quaque quarta hora | 每4小时 |
| q.6.h., q6h | every 6 hours | quaque sexta hora | 每6小时 |
| q.8.h., q8h | every 8 hours | quaque octava hora | 每8小时 |
| q.a.m., qAM, qam | every morning | quaque ante meridiem | 每天早上 |
| q.d., qd | every day / daily | quaque die | 每天/每日 |
| q.h.s., qhs | every night at bedtime | quaque hora somni | 每晚睡前 |
| q.d.s, qds, QDS | 4 times a day | quater die sumendum | 一天四次 |
| q.i.d, qid | 4 times a day | quater in die | 一天四次 |
| q.h., qh | every hour, hourly | quaque hora | 每小时 |
| q.o.d., qod | every other day / alternate days | quaque altera die | 隔天 |
| q.p.m., qPM, qpm | every afternoon or evening | quaque post meridiem | 下午或晚上 |
| q.s., qs | a sufficient quantity (enough) | quantum sufficiat | 足够的数量 |
| q.wk. also qw | weekly (once a week) | quaque week | 每周一次 |
| Rx, Rx, ℞ | prescription | recipe | 处方 |
| Sig., S. | directions | signa | 用法指示 |
| Stat. | immediately, with no delay, now | statim | 立即，无延迟，现在 |
| t.i.d., tid, TID | 3 times a day | ter in die | 一天三次 |
| t.d.s., tds, TDS | take by mouth 3 times a day | ter die sumendus | 每天三次口服 |
| u.d., ud | as directed | ut dictum | 按指示 |