Definition: To fly an aircraft very low to the ground, often just above obstacles, such as trees or buildings.

Example: The pilot decided to hedgehop over the fields to avoid the tall trees.

Definition: A young female cow that has not yet had a calf.

Example: The farmer bought a heifer to add to his herd.

Definition: A large, brownish-gray salamander that lives in water, found mainly in the eastern and central parts of the United States.

Example: The hellbender is known for its impressive size and unique appearance.

Definition: A type of freshwater fish found in Central America, known for its long, sword-like tail and often kept in aquariums.

Example: The helleri is a popular choice for aquarium enthusiasts due to its striking appearance.

Definition: A large, brownish larva of the dobsonfly that lives in water and is often used as bait for fishing.

Example: The fisherman used a hellgrammite to catch more fish in the river.

Definition: A mythical dog that is often seen as a guardian of the underworld, sometimes depicted as fierce and devilish.

Example: In the story, the hero had to face a hellhound to reach the gates of the underworld.

Definition: Describing organisms that feed on the blood of other animals.

Example: Many species of mosquitoes are hematophagous, as they require blood to reproduce.

Definition: A type of forewing found in certain insects, which is thick at the base and membranous at the tip.

Example: The hemelytron of the bug helps it to fly and protects its body.

Definition: Relating to a group of marine animals that are part of the phylum Hemichordata, which includes acorn worms and pterobranchs.

Example: The hemichordate species found in the ocean exhibit unique characteristics that distinguish them from other marine life.

Definition: A type of marine animal that is similar to a worm and belongs to the phylum Hemichordata, characterized by having a simple backbone structure and gill slits.

Example: The hemichordate is an interesting creature that helps scientists understand the evolution of chordates.

Definition: Describing a type of insect development that does not include a pupal stage, where the young resemble smaller versions of the adults and grow through a series of molts.

Example: Grasshoppers are hemimetabolous insects, as they develop through several nymph stages before becoming adults.