13-letter words containing a, t, h, o, d, y
- the secondary — cornerbacks and safeties collectively
- thermodynamic — of or relating to thermodynamics.
- thousand days — the presidential administration of John F. Kennedy, which lasted 1037 days (January 20, 1961, to November 22, 1963).
- thyroid gland — a two-lobed endocrine gland, located at the base of the neck that secretes two hormones that regulate the rates of metabolism, growth, and development.
- 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
- wood hyacinth — bluebell (def 2).