trepan

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tre·pan 1

 (trĭ-păn′)
n.
1. A rock-boring tool used in mining for sinking shafts.
2. Medicine A trephine.
tr.v. tre·panned, tre·pan·ning, tre·pans
1. To bore (a shaft) with a trepan.
2. To bore or otherwise make a hole in (the skull), as in certain prehistoric cultures or in surgery using a trephine.

[Middle English trepane, surgical crown saw, from Medieval Latin trepanum, from Greek trūpanon, borer, from trūpān, to pierce, from trūpē, hole; see terə- in Indo-European roots.]

trep′a·na′tion (trĕp′ə-nā′shən) n.

tre·pan 2

 (trĭ-păn′) Archaic
tr.v. tre·panned, tre·pan·ning, tre·pans
To trap; ensnare.
n.
1. A trickster.
2. A trick or snare.

[Origin unknown.]

trepan

(trɪˈpæn)
n
1. (Surgery) surgery an instrument resembling a carpenter's brace and bit formerly used to remove circular sections of bone (esp from the skull). Compare trephine
2. (Tools) a tool for cutting out circular blanks or for making grooves around a fixed centre
3. (Mechanical Engineering)
a. the operation of cutting a hole with such a tool
b. the hole so produced
vb (tr) , -pans, -panning or -panned
4. (Mechanical Engineering) to cut (a hole or groove) with a trepan
5. (Surgery) surgery another word for trephine
[C14: from Medieval Latin trepanum rotary saw, from Greek trupanon auger, from trupan to bore, from trupa a hole]
trepanation n
treˈpanner n

trepan

(trɪˈpæn) or

trapan

vb (tr) , -pans, -panning or -panned
1. to entice, ensnare, or entrap
2. to swindle or cheat
n
a person or thing that traps
[C17: of uncertain origin]

tre•pan1

(trɪˈpæn)

n., v. -panned, -pan•ning. n.
1. a tool for cutting shallow holes by removing a core.
v.t.
2. to cut circular disks from (plate stock) using a rotating cutter.
3. to operate on surgically with a trephine.
[1350–1400; Middle English trepane < Middle French trepan crown saw < Medieval Latin trepanum < Greek trypanon borer, akin to trŷpa hole, trȳpân to bore]
trep•a•na•tion (ˌtrɛp əˈneɪ ʃən) n.
tre•pan′ner, n.

tre•pan2

(trɪˈpæn)

n., v. -panned, -pan•ning. Archaic. n.
1. a trickster.
2. a snare.
v.t.
3. to ensnare or entrap.
[1635–45; earlier trapan= trap1 + -an, of uncertain orig.]

trepan


Past participle: trepanned
Gerund: trepanning

Imperative
trepan
trepan
Present
I trepan
you trepan
he/she/it trepans
we trepan
you trepan
they trepan
Preterite
I trepanned
you trepanned
he/she/it trepanned
we trepanned
you trepanned
they trepanned
Present Continuous
I am trepanning
you are trepanning
he/she/it is trepanning
we are trepanning
you are trepanning
they are trepanning
Present Perfect
I have trepanned
you have trepanned
he/she/it has trepanned
we have trepanned
you have trepanned
they have trepanned
Past Continuous
I was trepanning
you were trepanning
he/she/it was trepanning
we were trepanning
you were trepanning
they were trepanning
Past Perfect
I had trepanned
you had trepanned
he/she/it had trepanned
we had trepanned
you had trepanned
they had trepanned
Future
I will trepan
you will trepan
he/she/it will trepan
we will trepan
you will trepan
they will trepan
Future Perfect
I will have trepanned
you will have trepanned
he/she/it will have trepanned
we will have trepanned
you will have trepanned
they will have trepanned
Future Continuous
I will be trepanning
you will be trepanning
he/she/it will be trepanning
we will be trepanning
you will be trepanning
they will be trepanning
Present Perfect Continuous
I have been trepanning
you have been trepanning
he/she/it has been trepanning
we have been trepanning
you have been trepanning
they have been trepanning
Future Perfect Continuous
I will have been trepanning
you will have been trepanning
he/she/it will have been trepanning
we will have been trepanning
you will have been trepanning
they will have been trepanning
Past Perfect Continuous
I had been trepanning
you had been trepanning
he/she/it had been trepanning
we had been trepanning
you had been trepanning
they had been trepanning
Conditional
I would trepan
you would trepan
he/she/it would trepan
we would trepan
you would trepan
they would trepan
Past Conditional
I would have trepanned
you would have trepanned
he/she/it would have trepanned
we would have trepanned
you would have trepanned
they would have trepanned
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.trepan - a surgical instrument used to remove sections of bone from the skulltrepan - a surgical instrument used to remove sections of bone from the skull
surgical instrument - a medical instrument used in surgery
2.trepan - a drill for cutting circular holes around a centertrepan - a drill for cutting circular holes around a center
drill - a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows)
Verb1.trepan - cut a hole with a trepan, as in surgerytrepan - cut a hole with a trepan, as in surgery
surgical operation, surgical procedure, surgical process, surgery, operation - a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"
drill, bore - make a hole, especially with a pointed power or hand tool; "don't drill here, there's a gas pipe"; "drill a hole into the wall"; "drill for oil"; "carpenter bees are boring holes into the wall"
Translations

trepan

[trɪˈpæn] VTtrepanar

trepan

vt (Med) → trepanieren
nTrepan m

trepan

n. trépano, instrumento usado en la trepanación;
v. trepanar, perforar el cráneo con un trépano.
References in periodicals archive ?
L'etude de cas debutera par un expose technique simple permettant aux chercheurs en sciences de l'information de comprendre la problematique qui nous a amenes a proposer la combinaison des techniques du reverse engineering avec les informations contenues dans les bases brevets pour la conception et l'optimisation des trepans.
Nous mettrons en perspective le processus cognitif permettant la capitalisation des connaissances lors du processus technique du reverse engineering, ainsi que la contribution de l'information brevet dans le suivi des evolutions technologiques dans le domaine de conception et de fabrication des trepans, ainsi que l'identification des technologies porteuses de valeur.
L'efficacite des trepans est augmentee par l'amelioration de leur qualite, ce qui permet une augmentation du ROP, la reduction des NPT due aux aleas techniques (voir Annexe 1) et donc la reduction des couts de forage.
Les trepans sont utilises pour ecraser ou couper la formation rocheuse.
La bonne selection de trepans et de l'utilisation des parametres de forage appropries jouent un role crucial dans le deroulement des operations de forage, des couts et des durees.
La simulation du forage permet d'analyser les combinaisons de trepans et d'autres parametres afin de produire une performance optimisee en termes de ROP, de cout et de reduction du temps.
Il existe cinq principaux types de trepans utilises dans le forage des puits petroliers:
Les trepans a diamants ont ete introduits dans l'industrie petroliere en 1952 par Christensen Diamond Products (aujourd'hui Baker Hughes).
La realisation majeure dans l'amelioration de la resistance thermique de taillants PDC etait de produire des trepans au diamant de type PDC avec des lames resistantes a la chaleur (TSP) dans lesquelles l'espace entre les inclusions des grains de diamant ont ete graves au cobalt (Boryczko, 2012).
Le but est de reduire le temps de forage dans les formations les plus complexes, en alliant les avantages des deux types de trepans.
Rowan, the Shepherd, uses the same abattoir he trepans his flock as the church for his cult acolytes.
The edge trepans a small cone at the core while cutting.