18-letter words containing d, r, y, o, a
- under lock and key — a device for securing a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a key, dial, etc.
- vectorcardiography — a method of determining the direction and magnitude of the electrical forces of the heart.
- water of hydration — the portion of a hydrate that is represented as, or can be expelled as, water: now usually regarded as being in true molecular combination with the other atoms of the compound, and not existing in the compound as water.
- withdrawal symptom — effects of stopping a drug
- work-study program — a program enabling high-school or college students to combine academic work with actual job experience.