* = founded · >> = merged · + = extinguished
                         
| ´´´
| line / Linie (= 2,2558 mm)
| IIII (dial figure)
| IIII is optically larger than IV and gives a better visual balance with VIII opposite it on the dial
| 0 + 45
| Accuracy adjusted to 0...+45 sec./day
| 0N, 1N, 2N, 3N, 4N, 5N
| Weiß, Weißgelb, Hellgelb, Tiefgelb, Roségold, Rotgold (Normfarben für Goldlegierungen nach DIN 8238 bzw. EN 28654)
| 1 TSDP
| Nomos Uhrwerk:T = Triovis FeinregulierungS = SekundenstoppD = DatumsmechanismusP = Glashütter 3/4 Platine
| 2T
| 2-tone, bicolor
| 316L
| AISI (American Iron and Steel Institute) classification for CrNiMo-Steel (nickel-free)
| 333
| 333/000 fine gold (= 8 kt)
| 585
| 585/000 fine gold (= 14 kt)
| 750
| 750/000 fine gold (= 18 kt)
| 925
| 925/000 fine silver = Sterling Silver
| 999
| 999/000 fine gold (= 24 kt)
| 24h
| 24 hour indication (hour hand makes 1 rotation per 24 hours)
| 3H = [³H]
| Tritium, the radioactive isotope of hydrogen
| 8k, 8kt
| 8 carat (333/000 fine gold)
| 14k, 14kt
| 14 carat (585/000 fine gold)
| 18k, 18kt
| 18 carat (750/000 fine gold)
| 24k, 24kt
| 24 carat (999/000 fine gold)
|
| 
|
| A
| Avance (Fast, Vorgang)
| ABA Number
| American Banking Association Number (US Bank Identifying Code, Bankleitzahl)
| A/C
| (Bank) Account
| AC
| Alternating Current
| ACC
| Accutron
| A.C.Or
| Associazione Collezionisti Orologi
| AHCI
| Académie Horlogère des Créateurs Indépendants
| A.D.
| Anno Domini
| A/D
| Analog/Digital
| AD
| Authorized Dealer
| ADAEV
| Association pour le Développement des Activités Économiques de la Vallée de Joux
| adj.
| adjusted
| ADT
| Atlantic Daylight Time
| AFAHA
| Association Francaise des Amateurs d'Horlogerie Ancienne
| Ag
| Argentum (= Silver)
| AGHBO
| Association Genevoise des Horlogers Bijoutiers et Orfèvres
| AGS
| Automatic Generating System (Seiko)
| A/h
| Amplitudes/hour = Halbschwingungen/Std.
| AHCI
| Académie Horlogère des Créateurs Indépendants
| AHP (Longines)
| Automatic High Preicision
| AHS
| Antiquarian Horological Society
| AHST
| Alaska-Hawaii Standard Time
| AIHH
| Association Interprofessionelle de la Haute Horlogerie
| aka
| also known as, alias
| AKDT
| Alaska Daylight Time
| AKST
| Alaska Standard Time
| AL
| Alfons Lange Alpina
| ALS
| Alfons Lange & Söhne
| A/m
| Ampère/meter (Magnetic field intensity)
| a.m.
| ante meridiem
| AM
| Adolf Michel, Grenchen (former movement manufacturer)
| AmDo
| American Doublé = 10 micron thick
| AMI
| Amida
| AMSA
| A. Michel SA
| AN
| ?Accutron? (movement)
| ANCAHA
| Association Nationale des Collectionneurs et des Amateurs d'Horlogerie Ancienne et d'Art
| AP
| Audemars Piguet
| APO
| Army Post Office
| AQ
| AutoQuartz
| Ar
| Argon
| AR, A/R
| Anti-ReflectiveArogno Auguste Reymond
| ARC
| Anti-Reflective Coating
| AROLA
| Alfred Rochat & Fils SA
| ARSA
| Auguste Reymond SA
| asst.
| assortment
| ASUAG
| Allgemeine Schweizerische Uhren AG (*1931 >> SMH 1984)
| AS
| A. Schild, Adolf Schild
| ASP
| Armament Systems and Procedures
| ASS
| Automatic Signal Switch
| ASSA
| Adolf Schild S.A. (*1896 >> ETA 1978)
| AST
| Atlantic Standard Time Aleutian Standard Time
| ASTM
| American Society for Testing and Materials
| AT
| Azores Time
| ATL
| Anodische Elektrotauchlackierung
| atm
| atmospheres: Physical dimension for atmospheric pressure
| A.T.P
| Altimeter, Tradition, Präzision (Mühle, Glashütte)
| Au
| Aurum (Gold)
| auto
| automatic, self winding
| AV
| Aurore
| AWA
| American Watch Association
| AWC
| American Watch Company
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Abbreviations
Abkürzungen