a simple protein containing mainly basic amino acids
humic shale
Noun
shale that is rich in humic acids
hardwood
Noun
the wood of broad-leaved dicotyledonous trees (as distinguished from the wood of conifers)
hepatoflavin
Noun
a B vitamin that prevents skin lesions and weight loss
hardboard
Noun
a cheap hard material made from wood chips that are pressed together and bound with synthetic resin
hours
Noun
an indefinite period of time
hours
Noun
a period of time assigned for work
here and now
Noun
at this time
heulandite
Noun
a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium
hard times
Noun
a time of difficulty
holiday
Noun
leisure time away from work devoted to rest or pleasure
holiday
Noun
a day on which work is suspended by law or custom
holiday
Verb
spend or take a vacation
half-term
Noun
a short vacation about halfway through a school term
half-holiday
Noun
a day on which half is free from work or duty
honeymoon
Noun
a holiday taken by a newly married couple
honeymoon
Noun
the early (usually calm and harmonious) period of a relationship
honeymoon
Verb
spend a holiday after one's marriage
high noon
Noun
the middle of the day
hebdomad
Noun
any period of seven consecutive days
holy day
Noun
a day specified for religious observance
holy day of obligation
Noun
a day when Catholics must attend Mass and refrain from servile work, and Episcopalians must take Communion
half-century
Noun
a period of 50 years
harvest moon
Noun
the full moon nearest the September equinox
high time
Noun
the latest possible moment
hot spell
Noun
a spell of hot weather
halftime
Noun
an intermission between the first and second half of a game
holiday season
Noun
a time when many people take holidays
high season
Noun
the season when travel is most active and rates are highest
hr
Noun
a period of time equal to 1/24th of a day
half-hour
Noun
a half of an hour
historic period
Noun
an era of history having some distinctive feature
half life
Noun
the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
happy hour
Noun
the time of day when a bar sells alcoholic drinks at a reduced price
hockey season
Noun
the season when hockey is played
half-life
Noun
the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
hunting season
Noun
the season during which it is legal to kill a particular species