(Latin: place; from place to place; where something is positioned or situated)

dislocate (verb), dislocates; dislocated; dislocating
1. In medicine, to move a bone out of its normal position or location in a joint: Caroline slipped on the ice and dislocated her shoulder.
2. To force a person, people, or something from one place or situation to another one: The construction of the new hotel in town will dislocate several businesses and residents that are currently in the site where it will be built.
dislocation (s) (noun), dislocations (pl)
echolocate (ek" oh LOH kate") (verb), echolocates; echolocated; echolocating
1. To use a sensory system by certain animals; such as, bats and dolphins which usually involve high-pitched sounds that they send out: When creatures are echolocating, they are able to hear and to interpret the echos so they can determine the direction and distance of certain things.
2. In electronics, to determine the location of objects in certain areas by producing audible sounds and analyzing what is reflected back to the sender: Blind people are able to echolocate so they can be aware of, or perceive, where articles are located in order to avoid walking into them or so they can find them.
echolocation (s) (noun), echolocations (pl)
hoc loco; h.l.
In this place.
in lieu of
In place of; instead of.
In loco parentis. (Latin legal term)
Translation: "In the place of a parent."

Having the responsibilities or role of a parent, e.g. teachers during the time students are under their charge are in the legal position of a guardian. Anyone who serves in loco parentis may be considered to have responsibilities of guardianship, either formal or informal, over minors.

1. Instead (a place, a position, or a function properly or customarily occupied by someone else); a place; especially, in the phrases in lieu, in lieu of.

Stead means to stand (someone); in good stead is to be useful or of good service to (someone).

2. Etymology: from Old French lieu, "place", from Old French leu, from Latin locum, locus, "place."
lieutenancy (s), lieutenancies (pl)
1. The office, rank, or commission of a lieutenant.
2. The role, duty, or position of being a lieutenant.
3. A U.S. naval officer holding the commissioned rank just below that of a lieutenant commander.
lieutenant (s) (noun), lieutenants (pl)
1. An assistant to or a substitute for someone else in a higher rank or an assistant with the power to act when his superior is absent.
2. An officer in the U.S. Navy or Coast Guard of a rank above lieutenant junior grade, or an officer in the British or Canadian navies of a rank above sub-lieutenant.
3. A U.S. police or fire department officer of a rank above sergeant.
4. A first or second lieutenant in the U.S. Army, Air Force, or Marine Corps; where the first lieutenant is in a rank above a second lieutenant and below a rank of captain.
5. Etymology: from an Old French compound made up of lieu, "place" and tenant, "holding".

The word in Old French and the borrowed Middle English word lieutenant, first recorded near the end of the 14th century, referred to a person who acted for another as a deputy. This usage has continued, for example, in our term "lieutenant governor", the deputy of the governor and the one who replaces the governor if it is necessary.

In military references, lieutenant appears by itself as well as in compounds; such as, "first lieutenant" and "second lieutenant"; however, the original notion of the word in military usage was that the officer it referred to ranked below the next one who was higher and could replace him, if it were necessary; so, a lieutenant in the U.S. Army could replace a captain.