13-letter words containing d, i, c, h, o, t
- thyroidectomy — excision of all or a part of the thyroid gland.
- ticket holder — a person who has a valid ticket for an event or for a journey on public transport
- unchlorinated — not chlorinated; not treated with chlorine
- underclothing — clothing worn next to the skin under outer clothes.
- velocity head — the velocity of a fluid expressed in terms of the head or static pressure required to produce that velocity. It equals ρν/2 where ρ is the density of the fluid and ν is the velocity. In hydrology the density of water can be written 1/G where G is the gravitational constant
- welding torch — tool used to fuse metals
- wood hyacinth — bluebell (def 2).