Writing Tips
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Index P
- Pacific Daylight Time
- Pacific Standard Time
- paed-
- paedo-
- palaeo-
- paleo-
- pan-
- Panjabi
- para-
- parallel between
- parallelism in headings
- parallelism with correlative conjunctions
- parallelism with items in a series
- parallel to
- parallel with
- Paralympic Winter Games
- paralyse
- paralyze
- parentheses
- Parsi
- participle
- participle phrase
- particular to
- Pashto
- Pashtun
- passive voice
- past history
- past tradition
- patho-
- patri-
- patro-
- PDT
- PE
- peculiar to
- ped-
- pedal
- peddle
- pedi-
- pedo- (1)
- pedo- (2)
- P.E.I.
- penta-
- per
- per-
- per cent
- percent
- per-cent
- percentage
- perfectly legitimate
- peri-
- period
- period of time
- permanent resident
- perpendicular to
- perpendicular with
- Persian (1)
- Persian (2)
- persist in
- Perso-
- person
- personal
- personal pronouns
- personification
- personnel
- perspective (from the)
- petr-
- petri-
- phase
- PhD
- Ph.D.
- phenom
- phenomena
- phenomenon
- phleb-
- phosphorous
- phosphorus
- photo-
- photocopy
- physio-
- phyto-
- picto-
- Pilipino
- plan
- planning
- planning in advance
- plug
- plurals of compounds
- plurals of family names
- pluri-
- p.m.
- pneumo-
- poet
- poetess
- point at
- point out
- point to
- poisonous
- poly-
- Poppy Day
- possessive with gerunds
- post
- post-
- post on
- post to
- pound sign
- practicable
- practical
- practically
- practice
- practise
- pre
- pre-
- precedents
- preceding
- precise
- precision
- predicate
- predict
- predict in advance
- preface
- preferable
- preference for
- preference in
- prefer one to the other
- preoccupied about
- preoccupied by
- preoccupied with
- preplan
- preplanning
- prepositional phrase
- prepositions
- prerequisite
- presently
- present to
- present with
- preside at
- preside over
- presume
- pretence
- pretense
- preventable
- prevent from
- preventible
- prevent to
- previous
- previously listed
- previously listed above
- Prince Edward Island
- Prince Edward Islander
- principal
- principle
- prior
- prise
- prize
- pro-
- procedure
- proceed against
- proceed to
- proceed with
- process
- prohibit from
- pronoun agreement: collective nouns
- pronoun agreement: compound antecedents with and
- pronoun agreement: compound antecedents with or
- pronoun agreement: gender
- pronoun agreement: indefinite pronouns
- pronoun agreement: number
- pronoun agreement: person
- property owner
- prophecy
- prophesy
- proportional(y)
- proportionate(ly)
- provide a description
- provide against
- provide for
- provide with
- proximity
- pseudo-
- PST
- psycho-
- public service: capitalization rules (Linguistic recommendation from the Translation Bureau)
- punctuation: spacing
- Punjabi
- pursuance (in)
- put in place
- put into place
- pyro-
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PhD, Ph.D., Dr.
In English, PhD can be written with or without periods; both are correct. The trend today is to drop periods with abbreviations of academic degrees. However, many sources, including the Canadian Oxford Dictionary, still recommend the use of periods: Ph.D.
When you are addressing a person with a doctoral degree, it is considered more polite to use the title Dr. or the academic abbreviation PhD with the person’s name, instead of the simple courtesy titles Mr. or Ms.
Note: Do not use both the title and the degree. If the degree is listed after the name, the title is not used before the name.
- Chris Cameron, PhD.
OR
- Dr. Chris Cameron
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