Word Unit: hebet-, hebetu- (Latin: blunt, dull; lethargy, lack of energy or interest in doing things)
Word Unit: hecto- [HEK toh], hect-, hecato-, hecaton-, hekto-, hekt- (Greek: a hundred; many; a decimal prefix used in the international metric system for measurements)

Related "metric" families: yotta; zetta; exa; peta; tera; giga; mega; kilo; deka; deci; centi; milli; micro; nano; pico; femto; atto; zepto; yocto.

Word Unit: Hedonism, the Pleasures of Life (having feelings of pleasure or happiness are among the highest achievements of life)
Word Unit: hedono-, hedon-, -hedonia, -hedonic (Greek: pleasure, joy, and being happy)
Word Unit: -hedral (adj.)
Word Unit: helc-, helco-, elc- + (Greek: ulcer, sore)
Word Unit: helico-, helic-, helici-, heli-, helix- (Greek: spiral, coil; twisted, bent; spiral-shaped; a coil; by extension, "snail")

Other "coil" words are at this spiro- unit.

Word Unit: helio-, heli- (Greek: sun)

Related "sun" word family: sol-.

Word Unit: helmintho-, helminth-, helminthi-, -helminth (Greek: worm, worms)

A cross reference of other word family units that are related directly, or indirectly, with: "insects, bugs, worms; invertebrates": aphidi-; api-; ascari-; culci-; Dung Beetle Survival; Dung Beetles Important; Eating Worms; entomo-; formic-; Guinea worms; insecto-; Insects: Importance; isopter-; larvi-; lepidopter-; meliss-; mosquito; Mosquito, other Languages; Mosquitoes, Pt. 1; Mosquitoes, Pt. 2; myrmeco-; scarab; scoleco-; sphec-; taeni-; termit-; vermo-.

Word Unit: helo- (nail) + (Greek: nail, stud, wart, corn)
Word Unit: helo- (marsh) + (Greek: marsh, marshland)
Word Unit: hem-, haem-, hemo-, haemo, hema-, haema-, hemato-, haemato-, hemat-, haemat-, -hemia, -haemia, -hemic, -haemic (Greek: blood)

Inter-related cross references, directly or indirectly, involving "blood" word units: angi-; apheresis; -emia; hemoglobin-; phleb-; sangui-; vas-; vascul-.

Word Unit: hemer-, hemero- (Greek: day)

Another related "day" unit is located at this dies (DEE uhs) location.

Word Unit: hemi- (Greek: half)
Word Unit: hemoglobin-, hemoglobino-, hemoglobini- + (Greek: "blood " plus Latin: "sphere, ball"; oxygen-carrying protein of the red corpuscles)

Inter-related cross references, directly or indirectly, involving "blood" word units: angi-; apheresis; -emia; hemo-; phleb-; sangui-; vas-; vascul-.

Related ball, sphere-word units: glob-, glom-; sphero-.

Word Unit: hendeca-, hendec- (Greek: eleven)
Word Unit: heno-, hen- (Greek: one; used as a prefix)
Word Unit: hepato-, hepat-, hepatico- (Greek: liver)
Word Unit: hepta-, hept- (Greek: seven; normally used as a prefix)
Word Unit: her-, hes- (Latin: stick to, cling to, cleave to)